Kelsey Generating Station dyke studies field investigations, April 1963

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Kelsey Generating Station dyke studies field investigations, April 1963

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CANADA

DIVISION OF BUILDING RESEARCH

KELSEY GENERATING STATION DYKE STUDIES

FIELD INVESTIGATIONS APRIL 1963

by

G. H. Johnston

Internal Report No. 284 of the

Division of Building Research

OTTAWA January 1964

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PREFACE

The Division has been privileged to co-operate with

Manitoba Hydro in field studies carried out at the Kelsey Generating

Station in north-central Manitoba. These were begun during the site

investigation stage; instrumentation was installed during construction,

and observations have been continued since. Manitoba Hydro was

interested in the engineering performance of dykes constructed over permafrost as part of the Kelsey Hydro Project, as related to rates and amount of thawing of ice contained in the ground and the effects

upon the dyke st r uctur e s, This interest was shared by the Division as

part of a broader study of permafrost and northern construction, so that the interests of both were served by the same co-operative project.

The pertinent site information and the location and design of temperature and settlement measuring instrumentation are to be

described in a separate report. soon to be completed. The records

obtained from the temperature instrumentation by which the progress of thawing was to be gauged indicated some anomalies and fluctuations

which complicated their interpretation and created some un c erta int y as

to the predictions of the extent of thawing which had taken place. Consequently, in view of the importance of this information. it was decided to carry out a drilling program during the spring of 1963 for

verification. Crew and equipment were provided by Manitoba Hydro,

with technical supervision and observations by the Northern Group of

the Division. The description of this work and the observations made

are now reported. The author, a civil engineer. is officer-in-charge

of the Northern work of the Division.

It is a pleasure to record the appreciation of the Division for the very fine co-operation received from Manitoba Hydro in the course of these studies, from engineering personnel under Mr. J. R. Rettie. Chief Engineer, and from operating personnel at the plant who have assumed the additional duties of taking periodic observations, often under difficult conditions.

Ottawa,

January 1964

N. B. Hutcheon, Assistant Director.

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INTRODUCTION

.

"

.

Page 1 GENERAL

...

'

.

1 DESCRIPTION OF INVESTIGATION General • • • • • • • • • • • • • • • • • • • • • •ｾ • • • • • • • III • • • • • • • • • • • 2

Drilling and Sampling

...

3

Frost Indicator s

...

4

Other Observations • • • • • • • • • • • • • • • • • • • • • • ' III • • • • • • • • 4

RESULTS OF INVESTIGATION

General

...

,.

.

4

Specific Comments

...

₆

CONCLUSIONS • • • • • • • • • • • • • • • • • • • • • • e III • • • • • • • • • • • • • • • 8

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KELSEY GENERATING STATION DYKE STUDIES FIELD INVESTIGATIONS APRIL 1963 by G. H. Johnston

A field investigation was carried out at the Kelsey Gener-ating Station of Manitoba Hydro during the period 25 March to

7 April 1963 to determine the depth of thaw that has occurred to date under and adjacent to East and West Dykes No. 2 constructed on

perma-frost. The Division of Building Research of the National Research

Council and Manitoba Hydro jointly participated in the program. Manitoba Hydro arranged for and supplied the drill and crew and support

equip-ment and facilities at the site; the Division or ganized the program and

supervised the work.

This report has been prepared primarily for record purposes and describes the scope of the investigations and the results obtained. Some general comments based on the firrdin g s are noted.

GENERAL

The thawing effect of water in contact with perennially frozen ground is of considerable importance to engineers engaged in construction

work involving the flooding of areas underlain by permafrost. Early in

1958 studies were initiated at the Kelsey Generating Station of Manitoba Hydro on the Nelson River in Northern Manitoba where two main dykes

were constructed on permafrost. Instrumentation was provided in 1958

to measure ground temperatures under East Dyke No. 2 and the forebay adjacent to it and in 1959 to follow movements of East and West Dykes No.

2 caused by thawing of the underlying frozen ground. The general layout

of the hydro development is shown in Figure 1.

Ground temperature and dyke movement observations have been

made at fairly regular intervals. Filling of the reservoir behind the

powerhouse took place in stages beginning in May 1960. From about

1 June 1960 the forebay water elevation has been above 595.0 ft (ASL) and since 1 December 1960 has been maintained at an elevation between

601 and 605 ft. Thus, for more than

2i

years, water has covered most

of the reservoir area to varying depths and has been impounded by the two major dykes (East and West Dykes No.2) constructed on permafrost.

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By midsummer 1962 these dykes had experienced substantial

settlement which necessitated the raising of the dyke crests. The

maximum settlement which occurred in very local reaches of both East

and West Dykes No. 2 was about 6 ft and 5 ft respectively. The average

settlement was between 2 and 2. 5 ft for both dykes. The remedial work

was carried out during July, August and September 1962. Appreciable

thawing of the perennially frozen ground underlying the for ebay and the

dykes was indicated by the ground temperature measurements. It was

thought, however, that a more direct type of investigation would be most useful at this time to determine and check the depth of thaw that has

occurred since the reservoir was filled. Consequently, the field

investi-gation reported herein was organized and carried out.

DESCRIPTION OF INVESTIGATION

General

The field investigation consisted essentially of a drilling and sampling program to determine the vertical extent of the thawed layer at

specific locations under the reservoir and East Dyke No.2. One hole

was also drilled in an undisturbed area. Because of the naturally sporadic

occurrence of permafrost in this area near the southern limit of the perma-frost region and also to allow a reliable comparison of the results to be made with previous conditions, it was important that the drill holes be located accurately at points where the permafrost conditions existing prior to construction and disturbance of the area were known.

Eleven holes were drilled and sampled during the course of the

work. Four holes were located in the forebay near East Dyke No.2 - two

(CKI and CK2) at thermocouple cable KT 1 and two (CK3 and CK4) at

thermocouple cable KT2. Three holes (CK9, CK10 and CKI1) were drilled

in the forebay near West Dyke No.2 at the location of boreholes Nos. 793, 790 and 772 respectively, drilled several years before during the site exploration stage of the development.

One hole was drilled at each of thr ee locations on East Dyke No. 2 - hole CK5 near thermocouple cable KT3, hole CK6 near cable KT4

and CK7 near cable KT5. One hole (CK8) was drilled in an undisturbed

area on the downstream side of East Dyke No. 2 near thermocouple cable

KT7. The location of all pertinent boreholes (old and new), ground

temperature installations and settlement gauges is shown in Figure 2. The period during which the field work was carried out (late winter) was chosen expressly to take advantage of the snow cover and frozen ground surface for easy access and mobility around the site and also because of generally warmer air temperatures experienced at that

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3

-as _250

F and a four -day blizzard occurr ed during which mor ethan 15 in. of snow fell and was drifted by 40 mph winds, the work was not seriously hampered by weather conditions.

Drilling and Sampling

A Boyles Bros. diamond drill (model BBS-2) mounted on timber skids and equipped with an N -size hydraulic head was used

throughout. No wash water was required during the entire investigation

thus gr eatly simplifying the drilling and sampling work.

At the holes located in the forebay near both dykes, a 4-in. hole was augered through the ice cover and NX casing was placed through the ice and water and pushed until well seated from 3 to 5 ft

below the ground surface". Two layers of 4-mil polyethylene sheeting

were taped over the end of the casing before lowering it into the water. This procedure prevented water from entering the casing and thus

bailing was not r e qui r e d, Soil inside the casing was removed and

sampled using 2-in. dia, Shelby tubes. Shelby tube samples were then

taken at 2ft intervals below the casing until frozen ground was reached

-the tubes being forced down by "[he hydraulic head of -the drill. Samples

of the, frozen ground were also taken for a distance of 1 to 3 ft below the permafrost table.

On East Dyke No.2, NX casing was placed in 4-in. holes augered through the seasonally frozen dyke fill (about 8 to 10 ft) and then pushed down through the remaining sand fill and well seated

3 to 5 ft below the original ground surface. Some difficulties were

experienced in augering through the to? 4 to 5 ft of the hard frozen dyke fill but once penetrated, the hole stood very well and the casing was

simply dropped into the hole. At hole CK6, the NX casing had to be

pushed and driven down to the permafrost table because the very wet condition of the lower portion of the dyke sand fill and the underlying

clay caused slumping of the hole. Shelby tube samples were taken at

2-ft intervals until frozen ground was reached and then to a depth of

2 to 3 ft below the permafrost table. At hole CK8 in the undisturbed

area, Shelby tube samples were taken from the ground surface to a

depth of about 9 ft through the seasonally and perennially frozen ground.

All samples taken were retained for visual examination only and were discarded following completion of each hole.

The determination of the lower limit of the thawed zone {i , e. the permafrost table) was based primarily on a visual examination of the core samples obtained in the Shelby tubes and the identification of

ice in the soil. Other factor s considered (but not measured) were

penetration resistance as the Shelby tubes were pushed into the soil, relative soil moisture contents of thawed material and general condition

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temperature of the soil in the hole just before sampling or of the cor e obtained as it would have been most difficult, if not impossible,

to measure accurately. Pertinent details of the drilling program are

summarized in Table I.

Frost Indicator s

Special "frost indicators" were made up at the site and installed in the holes drilled on East Dyke No. 2 and in the undisturbed

area. These indicators {identified as installations KF3 to KF6

inclusive} consist of a length of flexible plastic tubing {3/8 in. I. D.

-1/8 in. wall thickness} filled with a methylene blue solution. The tubing

is inserted in a 3/4-in. di a, semi-rigid plastic pipe which serves as a

protective casing. This casing, sealed at the lower end, was placed in

an A-size hole drilled below the sampled depth of each of the boreholes

on the dyke and in the bush. The indicator s were installed to determine

the extent of frozen zones in the ground and, in addition, to check the

ground temperature observations. At temperatures above 32°F the

solution is blue but it becomes clear when temperatures below 32°Fare

experienced.

Other' Observations

During the course of the work, ground temperatures were measured at all installations using a portable precision potentiometer. In addition a level survey of all settlement gauges on East and West Dykes No. 2 was carried out.

The location of each borehole was related to the dyke centre lines by transit and tape survey so that they could be accurately located with respect to the original ground temperature installations and

bore-holes. Ground surface elevations at each borehole wer e determined by

level surveys.

RESULTS OF INVESTIGATION

General

Logs for each of the holes drilled are shown in Figures 3 to

13. The depth to permafrost, soil type, seasonal frost penetration and

ground temperatures, where applicable, are indicated on these logs. The bottom of the thawed zone {permafrost table} was

indicated during the drilling operation by a significant incr ease in pene-tration resistance when the Shelby tubes encountered frozen ground or,

more specifically, ice lenses in the soil. In many cases, the end of the

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5

-the frozen material depending on -the quantity of ice (thickness of

lenses) encountered. The presence of and depth to frozen ground was

readily confirmed upon examination of the material retained in the sample tube.

The occurrence of ice in the soil at the permafrost table varied from closely spaced (1/8 to 1/2 in. ) ice lenses 1/8 in. thick to

deposits of clear ice 2 to 3 in. thick. One 6-in. thick layer of ice

was encountered at the permafrost table in hole CKL Ice segregation

was predominantly horizontal but thin diagonally or vertically oriented ice lenses also occurr ed at random depths.

Within the frozen zone the soil layer s separating the ice lenses were, in most instances, quite plastic - similar to the naturally

unfrozen soil. Similar observations had been made during previous

investigations in this area. Although llfirmer" material was noted in

isolated cases, it was virtually impossible to distinguish between

frozen and thawed soils based on their 1"elative "hardness. II

Generally, the moisture content of the thawed soil immediately above the thicker ice deposits at the permafrost table was noticeably

greater than in the soil at shallower depths. The incr eased moisture

content probably indicates that this material had only recently thawed or was being thawed, the water resulting from the thawed ice having not yet

been redistributed through the soil. Changes or differences in the

moisture content of thawed soil immediately above much thinner ice

lenses (hairline to 1/8 in. thick) at the permafrost table were not apparent. Previous investigations at the site have established that all

frozen soils contain appr eciable quantities of ice, generally in the form

of closely spaced ice lenses of varying thickness. It is possible that soil

that appears to be thawed, i. e. contains no visible ice and is relatively plastic, is, in fact, frozen because it exists at a temperature below 32° F. The extent of this Ilfrozen" material, however .. would be limited to a very thin layer only a few inches thick above the permafrost table as determined

by the drilling operation. The abrupt and distinct occurrence of ice that

was encountered in the boreholes, therefore, can be taken as reliable evidence of the depth of thaw.

Permafrost ground temperature measurements, made over the

past few year s to depths of 20 ft , indicate that the mean ground temperature

is close to 32° F. At locations where extensive and thick ice segregation

occurs the mean temperatures appear to be about 30.5 to 31 ° F. At other

locations where the ice segregation and occurrence of frozen ground is

much less extensive, the mean temperature is about 31.5° F. To

deter-mine whether or not the ground is frozen and specifically the location of the permafrost table by means of ground temperature measurement is difficult, particularly when the temperatures to be measured through a

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profile ar e at or near 32°F. It is further complicated because the accuracy of measurement with the instrumentation presently used (under field conditions) is probably about"!: O. 2° F and in some cases

it may be ｾ 0.5° F. Observations made to date, however, show that it

is possible to locate the permafrost table by these temperature measurement methods to within 1 to 2 ft.

Specific Comments

The maximum depth of thaw occurring under natural

con-ditions (L, e. in undisturbed areas) at Kelsey varies considerably from

one location to another depending on. a number of factor s including

thickness of moss cover, soil t ype , soil moisture conditions and

topo-graphic position. It may range from 2 to 5 ft with an average value of

4 ft for the site. Even at one location the maximum depth of thaw may

vary significantly within a very short di.st an c e , Furthermore, it may

vary from year to year at one location depending on the "thawing

climate" experienced. i, e. a "hot" or "cold" summer. A comparison

of the depth to the permafrost table observed at each of the locations investigated prior to disturbance of the area and following flooding of the

forebay (to March 1963) is shown in Table II. This is necessarily a

crude 'comparison because of the effects of the factors noted above but does give some indication of the incr eased thaw which has been caused

by flooding. Explanatory comments pertinent to each of the specific

locations investigated during the recent field studies are noted below. At cable KT 1 (check holes CKI and CK2). located in the fore-bay at East Dyke No.2, the maximum depth of thaw each year prior to

disturbance of the area was about 4. 5 ft. This installation was covered

by water about 1 June 1960 and by that date the ground had thawed about 2 ft under normal conditions (from ground temperature records for

that year). Thus. the water has actually influenced the thaw from a

depth of 2 ft to a depth of almost 11 ft (April 1963) or a difference of

about 9 ft. The ground temperatures measured on 2 April 1963 show

excellent agreement with the position of the permafrost table as deter-mined by drilling methods (Figure 3).

At cable KT2 (check holes CK3 and CK4) in the forebay at East Dyke No. 2 the depth of thaw that occurred under normal conditions in 1960 up to 1 July when the installation was covered by water was

about 3 ft (from ground temperature records for that year). Thus, the

water has influenced the thaw at this location from a depth of about 3 ft

to about 8.5 ft (April 1963) for a difference of about 5.5 ft. Although

holes CK3 and CK4 a r e only about 15 ft apart and the ground surface

elevation differs by about 1 ft (i; e. CK3 has had a I-ft greater depth

of water covering it) the thaw depth observed was greater in CK4 by

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5 ＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭｾＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭｾＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭ

7

-both holes - at elevation 587. O. Again, the position of the

perma-frost table, as determined by ground temperature measurements and drilling methods, was in close agreement - within approximately 1 ft (Figure 5).

Turning to the thaw depths observed in the forebay at West Dyke No.2 it will be seen that significantly greater values were obtained at these three locations compared to those observed at East

Dyke No.2. Hole CK9 was located very close to exploratory A. H.

No. 793 (within 20 ft ) but the ground surface at CK9 was 4 ft higher. No frozen ground was encountered to a depth of 17. 5 ft below the ground surface at this hole and although the permafrost table might have been even deeper, it is also possible that ther e was no permafrost

at its location, i , e. hole A. H. No. 793 might have been near the edge

of a permafrost island and hole CK9 just outside this island in thawed ground.

Hole CK10 was drilled about 20 ft from A. H. No. 790 but at

an elevation (ground surface) 4 ft lower. The depth of thaw observed

in this hole is consistent with that obtained in the forebay at East Dyke

No.2,

1.

e. under 17 ft of water (as at April 1963) the thaw had taken

place to about 13 ft below the ground surface.

Hole

cxii

was located about 35 ft from A. H. No. 772 and at

about the same ground surface elevation. On the basis of visual

examinations of the samples taken in this hole, ice was fir st noted, and thus the permafrost table located, at a depth 18. 2 ft below the ground

surface - a much greater depth than observed in the previous holes. Extensive and relatively thick ice segregation was observed in all the reference holes and also in those drilled during this investigation with

the exception of A. H. No. 772 and CKll. The log of A. H. No. 772

(not included in this report) indicated a rather sporadic distribution of ice crystals and only very fine ice lenses - in fact, no ice was observed in the s oi l between 9 and 13 ft and only random ice crystals and lenses

« 1 /8 in. thick) at other depths to about 16 ft where an odd ice lens up to

1/4 to 1/2 in. thick was encountered. Thus, the apparent greater depth

of thaw observed at this location (covered by about 12 ft of water -April 1963) may be due to a much more rapid thaw of this soil, (con-taining little ice and probably thawed zones) by the water because less heat would be required to thaw the minimum amount of ice or possibly

some ice was missed at a lesser depth during the examination of the

samples which would have placed the permafrost table at a higher elevation. East Dyke No. 2 was constructed during the late winter of

1958-59 when the active layer was completely frozen because the clearing and grubbing operations would have allowed rapid penetration of frost. The dyke sand fill was probably completely frozen, except perhaps for the deeper portions, during that winter and mayor may not have thawed completely during the summer of 1959.

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8

-At cable KT3 (check hole CK5) the forebay water did not

impinge upon the dyke until December 1960. During the preceding

summer thawing penetrated only to a depth of 1 ft below the ground surface at this location and had refrozen by the time the water was

raised sufficiently to cover the ground surface [fr o rn ground temperature

records). The forebay water therefore has influenced the thaw from the

original ground surface and had penetrated to a depth of 8 ft by April

1963. Ground temperature m e a sur ern ent s confirmed exactly the position

of the permafrost table determined by drilling methods (Figure 7). At cable KT4 (hole CK6), located in the dyke at the point of maximum fill, water was impounded by the dyke from 1 July 1960.

During that summer the dyke fill thawed to within about 1. 5 ft of the

original ground surface. Water lying against the dyke and seeping through

the dyke fill has therefore influenced thawing of the underlying frozen

ground since about August 1960. Seasonal' frost had penetrated to a depth

of about 10ft by 1 April 1963 as indicated by the drilling program and the

frost gauge installed in hole CK6. This is verified by the ground

tempera-tures measured at that time - to within 2 ft. The depth of thaw below the

ground surface was determined by drilling and sampling methods to be

about 11 ft. The ground temperature rn e a su r e m ent s indicate. however,

that thawing had reached only a depth of about 8 ft (Figure 8). Allowing for

the pos'sible error inherent in the field measurement of ground

tempera-tur es (approximately O. 2° F) a depth of thaw of about 11 ft is indicated

and this value thus agrees with the thaw determined by drilling methods. Water has encroached against East Dyke No. 2 at the location of cable KT 5 (hole CK7) only during December 1960, the period 1 June to

15 August 1961 and from 1 October 1962 to the present. Seasonal frost

has penetrated the dyke fill and the underlying soil each season to a total depth of about 9.5 it - as verified by both the ground temperatures and

drilling program. The thaw has proceeded to a depth of about 7 ft below

the original ground surface as indicated by the sampling and is confirmed by the ground temperatures (Figure 9) - allowing for a field measurement error of about 0.2°F.

Only passing reference need be made to hole CK8, drilled adjacent to cables KT6, KT7 and KT8 primarily to install the frost gauge. Since 1958 ground temperature measurements have indicated that

thawing takes place in this. undisturbed ar ea to a depth of between 4 and

5 ft each year reaching its maximum penetration by the end of September.

CONCLUSIONS

Although no detailed ass essment of the thawing influence of the forebay"vater on the underlying perennia.lly frozen ground has been

attempted at this time because it is beyond the scope of this report, the results of the investigation carried out have shown the significant effect

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9

-that the water has produced in depressing the permafrost table during the relatively short interval since flooding of the reservoir took place.

The physical result of the thawing is evident in the settlements that

have occurred on both East and West Dykes No.2. This initial period

of observation is most critical because the thawing effect is more pro-nounced (rapid) during these years but will decrease with time as

deeper depths are reached.

The drilling program has verified that the ground temperatur e measurements are reliable. within reasonable limits, to determine the

rate and depth of thaw. All temperature observations should be made,

however. at regular intervals (preferably weekly) particularly during the

major thawing season - May to October each year. The special frost

gauge indicators were installed to assist in following the depth of thaw and are intended only to supplement the ground temperature measurements.

It is recommended that a drilling program. similar to the one just completed, be carried out in approximately three years' time to

check again the depth of thaw. The success of the recent investigation,

which was of a preliminary nature. suggests that a more extensive pro-gram might be contemplated at that time to define better the permafrost table under East Dyke No.2.

ACKNOW LEDGEMENTS

The assistance rendered and the interest shown by R. Weinhold, field observer for Manitoba Hydro Construction Division. and the co-operation and assistance of the operating staff at the Kelsey Generating Station (R. Thorn. Plant Engineer) during the work are gratefully

acknow-ledged. J. C. Plunkett of the Division of Building Research. National

Research Council ably assisted the author during the course of the field inve stigation.

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SUMMAR Y OF BOREHOLE INFORMATION - APRIL 1963

* Depth from top of ice or dyke - except for CK8 where depths are from ground surface.

Depth" of Frost Indicator 26.9 (KF6) ! 29.4 (KF3ll 35.8 (KF4 24.9 (KF 5 591. 5 '081. '0 583.9 596. 4 587. 2 581, 1 586.9 574.3 573.4 Elevation <573.3(?) I 8.0 0,0 8, 7 7.8 6.8 l3. 3 10.6 10.9 10.9 18.2 I II Ground Surface

Depth to Frozen Ground from 23. 2 17.2 22. 8 19.5 17.5 27.5 30.6 15. 1 29.9 Ice Or Dyke Surface :>30.7(?) 599. 3 594.9 592.0 592. 1 '086.7 595. 9 '094.8 592. 5 590.7 600.0 603. 2 Ground Surface Ice E1e vation 604. 3 611. 5 604.3 604. 4 604.4 604. 0 611. 0 604.2 or Dyke Surface 611.4 604.0 8. 3 8. 5 11. 7 13.3 11. 7 17.3 16.6 Total 12.2 12.3 9. 5 5. 8 6.8 9. 0 8. 3 11.7 16.6 15.0 11. 3 9.4 Depth

l

Water

I

or I Dyke , Fill 2.8! 9.5 2.7 ! I

- i

I Ice 2.8 2.7 2. 3 i 2.7

I

2.0 9. 3 31.0 30.7 30.7 19.0 119.0 Depth* 25.3 1 25. 3 25.0 1 25.0 19.5 119.5 26. 0 1 17. 7 39.0128.5 31. 8 1 22. 1 31. 0 30.7 30.7 Drilled 1 Sampled

KELSEY GENERATING STATION, MA.NITOBA

5 -4 -6 3 3-4-63 I 28.0 5 -4 -6 3 4-4-63 28-3-63 3 -4 -6 3 28 -3-63 27 -3-63 28-3-63 2-4-63 Date Drilled 30-3-63 W. Dyke #2 - Forebay - A. H. #772 E. Dyke #2 - Forebay - KT 1 E. Dyke #2 - Forebay - KT 1 E. Dyke #2 - Forebay - KT2 E. Dyke #2 - Forebay - KT2 W. Dyke #2 - Forebay - A.H. #793 Location E. Dyke #2 - 15' N. of KT3 E. Dyke #2 - 12' N. of KT4 W. Dyke #2 - Forebay - A. H. #790 Undisturbed Area - 20' N.W. of KT7 E. Dyke #2 - 15' N. of KT5 CK7 CK3 CK8 ｾｯｲ･ｨｯＱ･

iN

o . CK10 ｾｋＶ jcK5 fcK4 CK9 CKll I

ｾｋＱ

kK2

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TABLE II

COMP ARISON OF DEPTH OF THAW KELSEY GENERATING STATION, MANITOBA

Depth of Thaw 1 Reference Holes

Hole Hole Date Thaw Gd. Surface

No. Original 2 lvl.a r ch , 1963 Incr ease No. Drilled, Depth Elevation

A. H. 667 21 Oct. 1957

34'}

592.4

CKI 4. 5 10.6 6. 1 A. H. KT 1 (old) 23 Oct. 1958 5.3' Avg. - 4.51 _592.7

CK2 4. 5 10.9 6. 4 A. H. KT 1 (new) 29 Oct. 1959 4.7' 592.7 CK3 3. 8 8. 0 4. 2 A.H. KT2 24 Oct. 1958 3.8 ' 596. 5 CK4 3. 8 8, 7 4. 9 A. H. 663 8 Oct. 1957

_{5. O' }}

598. 2 CK5

}

7.8 2. 8 D. D. H. 671 1 Dec. 1957 5. 0' Avg. - 5. 0' 595.6 CK6 5. 0 10.9 5.9 A. H. 664 9 Oct. 1957 5.2' 606. 1 CK7 6. 8 1. 8 [A. H. 601 7 Aug. 1957 1. 21] 594.7 A, H. KT6 27 Oct. 1958

_{4.4' }}

600.0 CK8 3. 8

-

A.

H.

KT7 27 Oct. 1958 3.7' Avg. _{- 3.8 '} 600.0 A, H. K'I8 28 Oct, 1958 3. 3' 600.0 CA. H, 668 22 Oct. 1957 1.

1'J

600.0 CK9 5.0 ? A, H. 793 21 Jan. 1958 1. 51 to 5. OJ 594. 5 CKI0 3. 0 13. 3 10.3 A. H. 790 16 Jan. 1958 2.0' to 3.0' 590. 7 CKII 5. 3 18. 2 12,9 A.

H.

772 18 Oct. 1957 5. 3' 592.9

- Below original ground surface.

2 - Average value of thaw observed in reference holes.

! I !

J

(16)

KELSEY GENERATING STATION DYKE STUDIES - SITE PLAN SHOWING LOCATION OF GROUND TEMPERATURE AND SETTLEMENT GAUGE INSTALLATIONS

----4

600

610

8""

2 3 8₇

ｾＶＲＰ

KT - GROUND TEMPERATURE INSTALLATIONS KS - SETTLEMENT GAUGES 10,0

FIGURE

SCALE NORMAL

ｾＬ

FOREBAY ;

I

SHORE LINE EL 605·0' 1100 a 1100 1000 11100 FEET I 13 Io! b----l I I ... 610

.c>

r,;..o I POWERHOUSE N

-0-I

(17)

"'" o

"'

\

21+69 o ;;; 50 100 :!:OO SCALE IN FUT

FIGURE 2

20+00 I ... <S' ｾｾＮ 100 '0

s

I 16+00 o' NOTE

rRACEo (PART/ALLr; FROM H a ACRES a co £TO

oweｎｯｬ＿ＴｾｏＭＵＰＲＰ REv} ｾＮ［

ｾｬ｜

ｯｾ

..

s

16+00 & 772 o

s

CK 10 ... 0 19 0

Ｂｓｏｏｾ

In6.71H • o0:a{KF 61 § ｾ oGGS

I

---r----...

<.

ｾｦ

RESERVOIR RESERVOIR ＬＬｾ

/

r-.

PLAN OF WEST DYKE #2

z

+:

70,'00' f]

..

\.

J

s ' - - - - /

s

I

ｾ 7C,OOO1._--1--__" I

ｾ

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ＱＺｾＺ

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c

ｾ

ｬ 's_'°'b e

I

-Z._

I

Al(IS CHAINAGE 0 +-03

\

o

"'

"'.

o

"'

LEGEND o EXPLORATION BOREHOLE • THERMOCOUPLE CABLE{"TJ

o CHECK BOREHOLE 1196311CKI

- SETTLEMENT GAUGES 1"51

'00 - GROUND SURrACE CONTOUR

o

'1

ａＢｓＺｈｾｎｊｫ

(18)

PROJ ECT: P -17 3 SITE: Kelsey G.S. Manitoba DATE: 27-3-63 HOLE NO. CKI LOCATiON: E. Dyke #2

-

Forebay (KT 1) DEPTH: _{25' below ice} ELEVATION OF GROUND SURfACE (ZERO DEPTH): _{lee surface}

-

_{604. 3}

--METHOD OF ADVANCING HOLE : Diamond Drill (hydraulic head)

-

Shelby Tubes REMARKS: _{Placed 16' of NX casing.}

Ice thickness_{_._-_._ .. --_.}

=

2' -9"}ＭｬＭＲＱＭｲＭｵＭＭＭＭｾ

Water depth

=

9' -S" _

GROUND TEMPERATURES (2/4/63)

SOIL SAM PLE oESCRI PTiON CABLE KT I

PROFILE NO. DEPTH OF' SO I L 30 31 32 33 34 (OF)

ｾ

604·3 _ｾｉｃｅ 0

ｾｾＧｒｴｾＭｾｄｾｾｒＣｾｾ

'+'

j-

+±

-t

SURFACE

,-,+\---

_1-t-+-+

K:,

ｾＭ -'( ELEV- 592·7

H=l

I 10 2 ＱＭＱＭＫＭＭＫﾷｾ I .--- , I

+++' .

;-j-+--l--

I

ｾＮＫ｟ｉ

-+

WATER

fE

-t-v-Ｍｾ '-rl _-'1,1 -+-LL-i _I _: _I _r-"f- -i-t--f--ＭＫＭＭＭＭｪＭＭＭｴｾｉＭＭ

-t--i+-ＺｔＱ］ﾷｾ

-r-;-l

-r-1

I ＭＫＭｴＭｾＭｾＭ _. --r-l _-r--r-. I -12

ＲＢｾ

4 ,I ' i !

ｾ

GROUND SURFACE

_{ＫｦｊＭｾ}

i+

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--+-

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ＭＬＭＭＧＭｬＭｾＫ .;L-_

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_++-t-'

1&.118 _ｾ W 10 I i t.. t.. -L+- I , --+++-,

=Eff

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-t-+__

Ｋ｟ｾＮｉ . ....- - - -

-

12 ｾｬＮＺＺｴ［ＢＢＭｩＭＭｩＫｾＭｾｾ

1£1

/V Ｍ［ＭｾｾｾＭＭＭＭ : ｾ :

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+r:

1:-;1 I

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:I: _:x: _{ＺｾＮｾｾｩｾｾ}

_--

_{［Ｇｾ［ｾＫＱＭＭ} l- I-

'-1-t--+---t

n,22 - n, 14

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｟ＫｾＫ｟ｌ｟Ｎ［ＮＢ

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rdi

24 _{GREY VARVED CLAY} 16

ｽｾ｢Ｇ］ｕ｝ｾ

'_..

,

1:-

_It

'iI

25 579'3

_!

iX:

_::13-1-

ｾ

I _{"--BOTTOM OF HOLE} I - j 26

-

18

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RW-lT:+

++-tt

ｾＺＺｴＭｬＫ

F

I

GU

R

E 3

8R.1038-1 _..

_-_

....

BORING BY: _NRC DATE: _27-3-63

_{SOIL MECHAN ICS}

_LABORATORY

PLOTTED BY:GHJ DATE: _April, ₁₉₆₃ DIVISION OF BUILDING RESEARCH

NATIONAL RESEA RCH COUNCIL

(19)

TEST

HOLE

LOG

PROJ ECT: P-173 SITE: _{Kelsey G. S.} _Manitoba DATE: _28-3-63

HOLE NO. CK2 LOCATION:E. Dyke #2 - Forebay (KTl) DEPTH: 25. 3'

ELEVATION OF GROUND SURFACE (ZERO DEPTH): _{Ice surface}

_-

_{604 3}

METHOD OF ADVANCING HOLE _{Diamond Drill (hydraulic head)}

-

_{Shelby Tubes}

-REMARKS: _{Placed 19' of NX casing}

ＭＭＬ｟ＮｾＢＧＭ - - - ,

ｾ｟｟ＮＡ｢ｩ｣ｊｳ｟ｉＡＮＮＮｾｓ｟ｓ

_ _

p -

9 "

}-_U'

..J!.'.

._---Water depth , 9' -6"

FOR GROUND TEMPERATURES AT

SOIL SAt.4tJJ DESCRI PTION CABLE KT I

-

SEE LOG CK I

PROFILE NO. DEPTH OF SOIL

0 . . -604·3 _""=ICE "- SURFACE

'-h-ｾ

-t

+

-

++f---i- - -- _ｾＭ -10- __ｾ｟ 1 I

ｪＪｾＭ

I ₁ I WATER

_j-=.,I+

-R#

I

r

+

_L-+_ -1-

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1 L-_-I 12 592'1 1 , 1

'-"-1-ｾ

3 "

-W

L

+

GROUND SURFACE

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r+

/ _1- - I

r--:

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t

v

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_{ｾｲｆｲＡ}

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₊

- -14

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H-++

I ,

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I ,

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-,-

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16 I I I

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l- I , , 1

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GREY VARVED CLAY

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/ _3" 579·0 -l-rJ-.:.-

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-+

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T*i:

+1

If-

-'--H-r

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26I - -

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_{ＺＡｱ］ｴｾ}

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·i ,i---

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'

-F

I G

URE

4

19"" 3038-2

BORING BY: NRC DATE: 28-3-63 SOIL MECHAN ICS LABORATORY

PLOTT ED BY: GHJ OAT£:: April, 1963 DIVISION OF BUILDING RESEARCH

(20)

PROJEC.T: P-173 SITE: Kelsey G.S. Manitoba DATE: 28-3-63

HOLE NO. CK3 LOCATiON: E. Dvke #2 -Forebav (KT2) DEPTH: 19 5'

ELEVATION OF GROUND SURFACE (ZERO DEPTH): Ice surface - 604.4

METHOD OF ADVANCING HOLE: Diamond Drill (hydraulic head) - Shelby Tubes REMAR KS: Placed 14' of NX casing

Ice thickness := 2' -8" Water depth := 6'-10" SOIL PROFILE ｏｾ \l 81---SAMPLE DESCRIPTION NO. DEPTH OF SO I L 604'4 ｾｉｃｅ SURFACE WATER GROUND TEMPERATURES (2/4/63) CABLE KT 2 30 31 32 33 34 (OF) GROUND SURFACE I I

BROWN VARVED CLAY

UNFROZEN FROZEN ｾｂｏｔｔｏｍ OF HOLE 22I -I I t 241I

-FIGURE 5

SOIL MECHANICS LABORATORY

NATIONAL RESEA RCH COUNCI L

OTTAWA CANADA DATE: 28-3-63 DATE April, 1963 DATE NRC GHJ BORING BY:

---=--=-=--=---PLOTT ED BY: -CHECK.ED BY :

(21)

»

TEST

HOLE

LOG

PROJ EC.T: P -173 SITE Kelsey G. S. Manitoba DATE 28-3-63

HOLE NO. CK4 LOCATION:E. Dyke #2 -Forebay (KT2) DEPTH: 19. A'

ELEVATION OF GROUND SURFACE (ZERO DEPTH): Ice surface - 604.4

METHOD OF ADVANCING HOLE: Diamond Drill (hydraulic head) - Shelby Tubes REMARKS: Placed 14' of NX casing

Ice thickness

=

ＲＧＭＸＧｾ

_L-6" Water depth

=

5'-10"

22f--24r

-FOR GROUND TEMPERATURES AT CABLE KT 2 - SEE LOG CK 3

WATER OESCRI PTION OF SO I L ""=ICE SURFACE UNFROZEN FROZEN 'R:BOTTOM OF HOLE BROWN VARVED CLAY

:x: - - - _ 1 -_a. w

- - - 0

1 -1&1 - - - 1 & 1

....

585·4 587'2 J SAM P LE NO. DEPTH

---"..,---604·4 SOIL PROFILE Or--- \'0-ｾ 8

ｾ

6" - 595·9 GROUND SURFACE---V V

ＱＰｖｾ

V

V / 12 c-i."

V

/ V 14

Ｏｾ

ｾ

V/

::: 16 / f-I,.L

....

V

oLc-V"

2"

ＭＭｲＭＫＮＮＮＮ［ＮＮ［ＮＬＮＮＮＮ［［ＮＬＮＭｾｾＮＮＮＮＺＮＮＮＺ［［ＮＮ［ＺＮＮＺＮＭＭＭＭＭ

z

18

/l.L

z

:x: 19--1..:: t0 . 2 t0 -1&1 o

FIGURE

6

1311 JOJ8 - 4

DIVISION OF BUILDING RESEARCH NATIONAL RESEA RCH c

o

UN C I L OTTAWA CANADA DATE ｾＭＳＭＶＳ DATE April, 1963 DATE NRC GHJ BORING BY:

---=--'-=-=-=---PLOTT ED BY: -CHECKED BY :

(22)

PROJEC.T: P-173 SITE: Kelsey G.S. Manitoba DATE:Z9and30-3-63

HOLE NO. CK5 LOCATiON: E. Dyke #Z - Crest (KT3) DEPTH: 31. 8'

9'

-

_.

Depth of <bdce ｳ｡ｾｮｾ､ｾｦｾｩＢＬＬＭｬｬＢＧＭＭＭＭＺｌ｟ｾ _

Depth of seasonal frost .,.

ELEVATION OF GROUND SURFACE (ZERO DEPTH): Dyke Crest - 611. 0 __

METHOD OF ADVANCING HOLE: Diamond Drill (hydraulic head) 4" flight auger

-REtJAR KS: Placed 14' of NX casing Shelby Tubes

12' , , GROUND TEMPERATURES (2/4/63) CABLE KT 3 30 31 32 33 o

ｲＺＺｩｾｩｦｲＺｇｄｒｏｄＺＭＭｴｊＮｌＺＺＺｉｎＺｉｄ

LJ:S:IuIRIFAIcI:EEi

ｾｲＺｾｬｴＺｴｾＺＺＺＺｲＮＺｩｲＺＺｲＺｲｩｲＭｴｩｕＺｩ

Ｋｾ

ELEV - 599'3

ｒ］ｾ

rt:1----l----iI-+--i--i++--+----i---+-If-.I

2 I I t : : : : I I ;

ｲｪｾ

-+-

］Ｍｴ］ｈＫｾＺ

rrr

ＭｴｬＭｬＭＭｬ｟ＭｾＡＭＮ

+++++1

f-i--+++H--++--+'-I-':-+-+-'f-' H-t.----if--+-'1'-1--+--1-+-11-+-1-1

r-t-H-,,-

'-j-R:"R-+'

++J-J----i---I-H-+-+-+--+---+-DRILLED DESCRI PTION OF SO I L ""'"""" TOP OF DYKE TO 31'8' SEASONAL FROST FROST GAUGE KF 3 INSTALLED TO 29 '8' flAil SIZE HOLE

DYKE

---

_SAND SAM PLE NO. DEPTH ---...,---611' 0

--SOIL PROFILE

0Q"

_{• • l \ .}'.::

..:

28r- t-V _588'9 22ｆｾ I" I I 24I-- f

-t

1/ 26r- t-30r- t-8 (.'.\: .'_.,

..

_.

..

" .

ＹｾｾＮｾ

10

I'

>:: :

ali'.1038 -f ;--BOTTOM OF HOLE

7

579'2 32I:: ::: ＱＰＢＮ］］ﾱ］］ＭＭ］］］ｾ］ｾｾｾｾｾ

FIGURE

BORING BY: NRC PLOTTED BY: GHJ CHECKED BY : DATE:

ｪＮＹＭｾｾｾＳ

_ DA TE : April. 1963 DATE

NATIONAL RESEARCH COUNCIL

(23)

TEST

HOLE

LOG

PROJ EC.T: P-173 SITE: Kelsey G. S. Manitoba DATE; 1ｾｨＧｩＲｾｾＭＶＳ

HOLE NO. CK6 LOCATION: _E. Dyke #2

-

Crest (KT4) DEPTH: ₃₉ _0'

ELeVATION OF GROUND SURFACE (ZERO DEPTH): Dyke Crest

-

611. 4

METHOD OF ADVANCING HOLE: Diamond Drill (hydraulic head)

-

4" flight auger

-REMARKS: Placed 28' of NX casing Shelby Tubes

Depth of dyke sand fill 17'

---Depth of seasonal frost 9.5'

GROUND TEMPERATURES ( 2/4/63)

SOIL SAM P LE DESCRI PTION CABLE KT 4

PROFILE NO. DEPTH OF" SOIL 30 31 32 33 34 (OF)

##

.'

.

611,4 ｾｔｏｐ OF DYKE 6

GROUND SURFACEＭｾＭ

_-+-

_ｾＫ _Ll-L

·

. '

· .

SEASONAL FROST ｾ ELEV-594'8r ｉＭｾ I DYKE

8

---=--;-

4

ｪｾＫＭｈＡｉＭＡＧ

I ＫｴＭＫｾＭ

.-1

SAND

..

DYKE

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-+-

!i-'

:=-' FILL

--

.:.. 6" -

- - - -

I-+t-10

S

SAND ₂

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_{IT +}

·'« : FI LL

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-t-+-=tt=

..:-.J_1 Ti-W -;- I " '.'11 .: I i I I

n,+

,

ｾ

SURFACE 0 ; , i r-;--r-i , ' I

.,

I 16 7" 594·8 ORIGINAL GROUND 1--' I , T I _I 1/ _ｾＬ , 1I I j

++H--

,

frl/

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18 2 , :

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[/1/ BROWN VARVED CLAY I&. ,

++

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II

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, tit-'

.-I- l-V

_H-t-+-i

I

-1-i--f-.:

ｾＲＶ

₁₇

v

Z I I , , I

-

6

-ri-1+

-+--H+

_r

Hi :)

-H-i+ UNFROZEN : , 1/ _{, ,} -58B'9

=H,

r-r-r-r

-'-T-rr- ＭｾｩＫｬｴ

_{ｾｬｴｾＧＭ}

J:

r-1-1.-6 J: , : ｮＭＭｾ -h-rr

ｾＲＸ

_ｾｾ

_{ｾＸｚＺｾ} _{ｾｾｚｅｾ} _ _ _ _ t- -rt I ｾ H--M- ! , . " J a. 8 ++i-j-ＭＫＭｾＭ

_ｾＭ

+H-+-w 6

-ｾｓａｍｐｌｅｄ

DEPTH ILl -l-n-- --Q _Q

ｾ［ＩﾷＭＱｾｴＭ

Ｍ］ｴＫｾｾＮ｟Ｍ -JI-r--r ••I ---!-ｾＭｴｴ -'f- -1 I I -1---!: -l----+- --_-!-

t--10 ' I I ' I 30ｾ

-

,

ｾＫｮ ' I

-1-+-+

, Jl-H-

H+

H-

-ｾＫＺＭ

I , 1--+-_{ＭＭＭｬＭＢＧＭｾ} _:-.

1_H=t-

₊

rH-H-

--H-+

r -lI_A"

SIZE HOLE DRILLED ｾＫｈＫ r '

12 . ｾＭＫＭＭｬｾＺＭ 1- -1-:-H-32f- ｾ 39' , .i-t- ｾＢＧ［Ｍｴ

-;-A-1=(-=

tt

TO (BEDROCK) _ｾＭ --j-- I ＭｾＭｦｪＭ

H-rt--r

-r+i+

-j--r-+--H-+

+- "

34f- ｾ ₁₄ i'!t ..- , - T -j

-H-+

+H+

-+ffi-

H+ -

-+-!-- , FROST GAUGE KF 4 _, '

ｭｾ

nil

-t+r+

-i-tNSTALLED TO 38'2 _ｈＫＭｾ -r

_-Ii-,'

'-1- _1"1-

H+--,-

-+-36f- ｾ I --f ,

_-it

+ I ,, ＭＫＺＭＺＭｉＭｾ T

_t-j-

.- t-H-38I - ｾ -_1 H-+-

p-572,4 BOTTOM OF HOLE --r

ｾ｣

R+

-t-+-' 39

ｾＩｾ

=c

BEDROCK -I- i-

_,--t

m-

,.

+-H-

t-j--++

H

40l

-F1GURE

8

81?ｾｯＳＸＭＶ NRC ｾＮＭｾＭｵＮｊ LABORATORY

BORING BY; DATE: 1 and 2-4-i>3 _{SOIL MECHAN ICS}

PLOTTED BY: GHJ DATE; April, 1963 DIVISION OF BUILDING RESEARCH

NATIONAL RESEA RCH COUNCI L

(24)

PROJEC.T: P-173 SITE: Kelsey G.S. Manitoba DATE: 2 and 3-4-63

HOLE NO. CK7 LOCATION: E. Dyke #2 - Crest (KT5) DEPTH: 26. A'

ELEVATION OF GROUND SURF'ACE (ZERO DEPTH): Dyke Crest - 611. 5

METHOD OF ADVANCING HOLE: _ Diamond Drill (hydr<!,ulic head) 4" flight auger

-REMARKS: Placed 12' of NX casing Shelby Tubes

_ Depth of dyke sand fill ...

, I GROUND TEMPERATURES (2/4/63) CABLE KT 5 27 28 29 30 31 Ｍ｟Ｎ｟ＭＭＭＭＭ｟Ｎ｟ＭＭＭＭＭＭＭＭＭＭｾＭＭＭ 9.5' 8.5' DESCRI PTION OF SO I L "=TOP OF DYKE SEASONAL FROST DYKE SAND FILL SAMPLE NO. DEPTH . : : -611·5 .'

..

Ｒｾ

..

·.

Ｖ

ｾ

_·

_" SOIL PROFILE

o .-'---:-:

_{· ..}

Depth of seasonal frost

...---::..

BROWN VARVED CLAY

596'4 UNFROZEN ＭＫ］ｉｦ］］］ＺＭＺＭｾｆｒｾｾｏｚ __E_N _

r20 221 -24 - ! -26 -- '- 585·5

"A" SIZE HOLE DRILLED TO 26' FROST GAUGE KF 5 INSTALLED TO 25'1'

'=

BOTTOM OF HOLE

FIGURE

9

81?3038-7 BORING 6Y: NRC PLOTTED BY: GHJ CHEC.KED BY : DA TE 2 and 3 -4-63 DATE: April, 1963 DATE

SOIL tl.ECHANICS LABORATORY

DIVISION OF DUILDING RESEARCH

ｎａｔｉｏｲｾａｌ RESEAHCH ｃｏｕＱｾｃｉｾ I

(25)

--TEST

HOLE

LOG

PROJ EC.T: P -173 SIT E: Kelsey G. S. Manitoba DATE: 3 -4-63

HOLE NO. CK8 LOCATION: East - Undisturbed Area (KT7) DEPTH: 28.0'

[LEVATION OF GROUND SURFACE (ZERO DEPTH): 600.0

-METHOD OF ADVANC IN G HOL E: Diamond Drill (hydraulic head) - Shelby Tubes

Placed 2' of NX casing REMARKS: ＭＭＭＭＭＭＭＭＭＭＭｾｾＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭＭ 34 -- +-1 t-L GROUND TEMPERATURES (2/4/63) CABLE KT6,788 31 32 33 +-+-+-+-+-+-+-+-1- - -- -ＭｾｊＭＭＫＭｈＭｈＭｈﾭＧＱＫＱＭＭＫＭｈＭＫＫＫＭＭｉＭｉＭＫＭｉＭＭＫＭｪｈＭｾＭｉＭＭｉＭＫＫＭＭＭｉＭｉＭｈ 30 I . I--+--H-i--I--H-f-l-I-ll-f-+-'L-l-H-++I-i--H-I-I-H-H-I ｉＭｩＭｈＭｈＭｈｾｈＭＭｾ , 6

+

'-HH-l-+-f-lf-H-I-++-+-+-.H-t-l-i---'-i---'-i--+-i---H

o

W-U- !.J,

GROUND SURFACEI--fL_ｾ｛Ｗ［ｩＭＧ H-I-l-H-4-I-t-H-H -ELEV - 600 •0ｾＭｬＭｉＭＫＭｉＭＫＭｈＭＭｪｬＭＭＭＡＭＭｬｌＭｦＮＮＮｪＧＭＭＭｬＭＭｪＧＭＭＭｬＭＭｪＭＫＭＭＱｉＭＫＭＫＭＫＭＫＭＫＭＫＭｾＫｾ -+-+---+-!H---j---I-"H--H--I--l--H-+-+-+-+-+-+-1 FROZEN FROST GAUGE KF 6 INSTALLED TO 27'6'

BROWN VARVED CLAY

1

SOIL SAM PLE DESCRI PTION

PROFILE NO. DEPTH OF SO I L

o

ｾ

600'0

ｾｇｒｏｕｎｄ

SURFACE

=:

,,-+-+--- ORGANIC MATERIAL 2l/

Z

8

V

1/ 4

-V

1/ 1/ 6 ｾ 1/ V

ＸｴＷｾ

V ＢｾｦＭＭ 590·7 t-_ 4 - I f- - - -

ｾ

ｓａｍｐｾｅｄ

DEPTH-:::

ＱＰＱＫｬＭＫｉＭＭＫＭｈＭｈＭｉＫＭｈＭｾＫＫＫＫＫＫＫＫＫＭＭＫＭＫＭＫＭｊＭＭｉＭｬ

I .... _H-

I

_--

IT'

' ,

ＧＭＴＭＧｾＧＭＴＭＱＫｉｦＭｬＭｦＭｬｦＭｉＫｈ Z

H-i-L"IT

H,ir-i----+-J---i-"--+I--t-+ＫＭＫＭＫＭｴＮｌｬ｟ＭｬｬｾＫＭＫＫＭｾｈｈＮＮＮＬｦＴＭＫＭ ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- ++-+H+-l-- 12

r;ti

r-Tln

" A" SI ZE HOLE DR ILLE0

+-ti--

+-+-+_-L

w

+:_-H,:'_-+,+_-++_-1-1-_

-n- --

-1_{1--l-f-lf-H - H --H}

TO 28·0'

ｾ

r:r;- '

q=+=t-: -

ｾ］ＫｴＭｉＭＭｩＭＭｬＭＭｬＭＫＭｉＭＭｬＭＫＫＭＭｷ

ｾ

14

+,1,+'- -H-FA-

]::ITll-

-l-i-++

-j--

--_ --_ --_ --_ --_ --_ --_ --_ --_ｯＭｬＭｾ I- ＡＭＭｾｉｊＮｬｾＭＫＭＫＮｊｉＭＭｉｉ +-IH--iH---l--I!-+-I -++t+

-i--

I-1--

r-l'"

I

+H+

+"

,,

16;+11-1

--1+

,d-t-H--H+

-t-1--t

,H-H:--t-[lit+H+1-Tr

,-l- -+--

--..1=

+-tt+

-t

ＫＺＭＭＫＭＧＺＴＫＭＭＫＱ］ＫｾＱｾｾＱｾ

! I I

11--t+

+1-'

ＭｾＭｾＭｾＭ

I •

j-l-ｪＭＫＭＫＭＭＫＫＭｩＭＫＭＫＭＫＭＬｾｔＫ

,[4

-20 --1--+--1--+--1--+"-+->-,1 -', _ -t- , I - -++ｾｾｲｬ '1- -- +-I-+--4-+'-< 1-+-+--1--1-+--1-'-1- .:-1-1-+--+-1-+-+-1-- ++-++++++-+-1-H--++++++H--Hl-+-J.+-l-+-J-H--l-++ 18f- r-221- r-20I - f-241- r-z 12f -

t-....

....

101-....

:I: t-Il. 161- I

-....

o 26 f- f-- ＭＱＭＱＭｾＭＫＭＫ

I-P=---+1---1--++++--+-1-- - --1- -.j·---I--I-l--H-+

28'- .... _ _...&...57_2_'_0 ,...---BOTTOM OF HOLE

FIGURE

10

NATIONAL RESEARCH COUNCIL

OTTAWA CANADA DATE: 3-4-63 DATE:: April, 1963 DATE: NRC GHJ BORING BY:

-PLOTT ED BY: ｾＭＭＭ CHECKED BY :

(26)

TEST

HOLE

LOG

PROJEC.T: P-173 SITE: Kelsey G. S. Manitoba DATE: 4-4-63

HOLE NO. CK9 LOCATiON: W. Dyke #2 - Forebav (A.H. 793)DEPTH: 30.7'

ELEVATION OF GROUND SURFACE (ZERO DEPTH): Ice surface - 604. 0

METHOD OF ADVANC ING HOLE: Diamond Drill (hydraulic head) - Shelby Tubes

REMARKS: _{Placed 20' of NX casing}

｟Ｍｫｾ｟ｩＱｬＮｩ｣

ｫｮｾＮＤ｟ＡｌＮＭ］］｟ｾｾＭｮＢｾＴＪＭ

Water depth = 111_{- 4 "}

SOIL SAMPLE DESCRI PTION

Or-:! 604·0 ,""ICE SURFACE

"

8 r

-

-+-- t -10f -WATER

t

-f-

₊

12f - - _, _.-4 _.-4; - 590'7 GROUND SURFACE r-,...

ｾＭ

- ..l. -14 I I t-

-+-l- V III _/ UNFROZEN 1&1 1&1 16 tr- w IL IL Y __I -_..1-1

/ BROWN VARVED CLAY -I ...

.-z Z """""I-(-

-;-+

.-- 18ｾＭ

-

I ,

+

_#'-

I Y _IT

:-,

-1-vV

_Ht

ｾＭＱｾ :I: :I: :=1

Tt

t;t

1

.++

....

-r

I r -D.20H-7' D.

+1=

_{ＭｾｴｴｾｾＭ}

_ｾＺＺＮ

t

H-w

vV

w _L

-t

T -- -- -ci 0

₁₊

1'- - _T

ｾｲＮＭ

-!-

=t-

It.:

-1--'-

-t

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1+

1-t7/

-,-

+

,- -..- .-22 I

trW-

=t+J-

j

_...f I

-1+I...Jt

-- -V _{_L} - -

_::"1

-y

+-

"t1-t-

+ -24 F!r'= I"

--

₁

-l

'+

V - _. -y

t -

-GREY VARVED CLAY

ｖｾｦＭ - - _.- - --26

+

+-

+:-

I •

-t-

H ---r-.-r-i j y _{ＫｾＱＺＭＭ} - -

｟ＸｾｾＬ

_- _-' -V UNFROZEN

:-1- _.

-28 t7'- i- J. --J.-V L

_.

V

+

-J -- ..L _"I -- - ILI--I-30 _573·3 1-0 .... 8" -r-1-- ... - t -- -_. -ｾｂｏｔｔｏｍ -OF HOLE - -- - - .-32

'----FIGURE

11

8/i' 3038-9

BORING BY: NRC DATE: 4-4-63 SOIL MECHANICS LABORATORY

PLOTTED BY: GHJ DATE: April, 1963 DIVISION OF BUILDING RESEARCH

(27)

TEST

HOLE

LOG

PROJEC.T: P-173 SITE: Kelsey G. S. Manitoba DATE: 5-4-63

HOLE NO. CKIO LOCATION: W Dyke #2 - Forebay (A.H. 790PEPTH: 31. 0'

1

-ELEVATION OF GROUND SURFACE (ZERO OEPTH): Ice surface - 604.0

METHOO OF ADVANCING HOLE: Diamond Drill (hydraulic head) - Shelby Tubes

REMARKS: Placed 24' of NX casing

Ie e

ｴｨｾ＼Ｚｾｮ･

ｾｾｾ｟

2' - 4"

ｬｩＧＭＭＭｊｬｾＷＧＭＧＭＧＭＭＧＺｉＴＬＮＧＭＧＧＧＧＭＭＭＭＭＭＭＭＭＭＭ

ＮｾＮＬ｟ｾ

_ Water

､｟ｾｭＮｨ

=

15' _0"

J

7 " - 573·4

--F

ＵＷＳﾷＰｾｆｒｏｚｅｎＭＭＭ .. '"'-BOTTOM OF HOLE

t

_, I ｾ __ I - I T -ｾｾ｟ｪ __ J.JL.j. , ＭｲＫＭｈＭｾｴ

__

ｉＭＧ｟ｈｉｾｬＭｬＭｉＭＭｉＭＬ -+-+-+-+-+-H

,Lt- -H--;...>-l-iL,++

tt'iii

-j'-H-+L+-+++-+-+-f-f-I

-r-H--J-.-'-+-1--;"·-t---rt-+-+i-+-f-f-+-I+-+-l-f-f-+-+-I-+-l ++.j'

-BTl

i-++-h-i'-+-'++-l--i-+--{-+-J-f-f-l-f-f-+-+++-H--+-1 UNFROZEN UNFROZEN DESCRI PTION OF SOI L ｾｉｃｅ SURFACE GROUND SURFACE

BROWN VARVED CLAY

Ll., : i " I I : t-..L.j-l--I-+-++++-+--I,-\ ｾＫＫＭｩＺＭｪＭ_-+--r-r-' 1-+_ＭｩｾＭ +1'-

_-+-

ｾＧｾＭＧＭＡ _-U

..Lt-i

-+1

H--j- --,--ｾＫＴＭＱＭｴＭＭｬＭｴＭ

z

-rr·H-

-H+r-H-,-r+r-H-

--l--f--f": ' I

-, : I

+

I-H--f=T

'+-;-

'+,+-,-'-J-.-C--I-H-+++-HH

-, 'j_i..L

-t-,

tL

_t -i++-+-

-t.;.L-i--t..J

-1- ...j

+'r

--j-t-L!-

-+--H

+

I -ＺＭｾｾＭｉＭＭｉＭｊＭＭｉＭＫＭｬ

_.,. I__ ,_L_,I -<-_I ! -\-_ＭＢＭｲＮｾｌ e-L-I---'..--I-->---L-+·I_I-_I_-+__

.j._\-' I ,r-r I I : I I I "

1

-1&1 - - - 1 & 1

....

WATER SAM PLE NO. DEPTH Ｍｾｯ［ＺＭＭＭＭＭＭＭＭＭ 604·0 +7" -4 -4; - 586·7 SOIL PROFILE

OM

ｾ 811 2 - 10f1 4 - I-1&1 1&116"--I&. z [7 18ｾｦＭ V J: / I- / e,20 -t? ｾＬ

/

II 22 f-j,.<

1/

V 24

t7

11 VI'-II

ＲＶＱＱｾｬＭ

I/V

28\.Lf-l-1/1/

V 30 f-l7' 17"r-31 ...

321--FIGURE

12

BOR ING BY: NRC

PLOTTED BY: GHJ

CHECKED BY :

DATE: 5-4-63

DATE: : April, 1963

DATE

NATIONAL RESEA RCH CO UN CI L

(28)

ｾｾｊｅｃＮｔＺ

P-J73 SITE: _{Kelsey G.S. Nlanitoba} DATE: _{5 -4 -6}₃ HOLE NO. CKll LOCATION, W. Dyke #2 Ｍｆｯｲ･ｾｾｹＨａＮ H. 772PEPTH: 30.7'

f---.

ELEVATION OF GROUND SURFACE (ZERO DEPTH): _{Ice surface}

_-

604. 2

- - -

-METHOD OF ADVANCING HOLE:_{_l=>i}_{｡ｮｾＬｦＮｬ｟Ｈｬ｟ｊＺＩ｟ｲｩｬｬＨｨ} _ydr_a_{ｾｾ｟ｾﾣ｢･｡｟ｾｨ} _{e 1}_{ｑｹ｟ＧｦｵｬＩｾ} REMARKS; _{Placed 18' of N X ca}_ｾｾｧ _{____________}

ＭＭＭＭＭＭＭｾ -.---_. - - - -, . _

-Icethickness

=

2'-2"

I

--- ＫＭﾱｾＹｬｬＭＭＭＭＭＭＭＭＭＭＭ

\IIa..Lex ｊＺＱｾｰｩｬｩ -_ _9'-D

'I ,

,_ ___ , _

--SOIL SAMPLE DESeRI PTION

ｏｾ

604·2 ＭＧｾｉｃｅ SURFACE

Itij-+:'

-t+i--l-t-:

_-i-1+

_+H-L

-++i

ｾＭ

_-+i-+-

+-IH--t ｾ I_L_

rIft-+- -l-+--t-+-- --

_ｾＭ

-I

--1

ｾｾ

:+t

_il:-!-- _{ｩＭＡＫﾷｾＭＫ｟ﾷ} _{Ｍ［ＭＭｲＭＭｾＭｩＭｾ}

81--++++

WATER

_.:

ｾＭＭ

-H:.t+

_{n, '}

...4-- .,._.. __ 10 I I --+ _ｉｾＭ , IT 592·5 GROUND SURFACE _IJ

_'.

'-'

ｾｴｺＺ

8"

rr

12 1/ H-L,-;

H

,

V

' -r-r-14 I,.<j-IT.!. i ;-, -. I ' T _L-+-! ..J__

....

1/ l-

_i]

. t-i---++-

_--+-ii 1'-ILl t;>k UNFROZEN ILl _ｦｩＮｾ

H

T

--t-H-r

ILl ₁₆ _ILl , ,j lAo lAo t.,

.

_; 1/ -- ; _{I ,} _I _! i r-' , :

V

"P,;

z

: r ' , 18b-'I-- - ,

Ji:

_itT

1/ BROWN VARVED CLAY 1--'

,",---

I

+

.L 1-, 'r- r

-r:'

V

... -X X

h

!

' 1 ｾ

_{..t 1:=}

1 l- I/ l- i , iT a.20 j-17 _a. ' L ILl / ILl _.1

.

-, .•. -0 0 I ·

I ;

.' , : I ' 22 f-17 ｾ t •

'I· '

I

IL:

V

"

',-/ Ll- ,,'

; . I

ｾＮ f-lL :- --'---1--ｾＭＭＮ ,,,-- I ; _{: '} 24

V

j

t

I J •

Ｇｪｾ

, , / , , t

-ｉｾ＾ﾷ

/ -:

iTT

i·"-" r r ' '" 26

-/-/

ｾＭｲ［ＭＭ

L --i.: .'.i " ! i

;'1

,

f-t;> 10"- -

f

-,;T

Itil'/iF

1/

GREY VARVED CLAY

r

_i ;

287 ' - i ! !

_1-'

_t_i

I

I / UNFROZEN

T

. rｾＮ

,TL

V

;-/f-17 " 574-3

r·

, i _ｾ _Ｍｾ i·1 i " ｾＧ 30 II

t-

573·5 - FROZEN

Ii

'J 'Ｎｾ I- I

_lL_

_9"

.

; ,1

i·\-F

t

_=rr=

; BOTTOM OF HOLE

_..+

_T

I -i

;H'1

_H

'

-F

I

GURE

13

/3f?3038-1/

BORING BY: _NRC DATE: _5-4-63 _{SOIL MECHAN ICS} _LABORATORY

PLOTTED BY: GHJ DATE: April, 1963 DIVISION OF BUILDING RESEARCH

I