Permafrost Studies at the Kelsey Hydro-Electric Generating Station: Research and Instrumemtation

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TypeTechnical Report
Series titleTechnical Paper, Division of Building Research, National Research Council Canada; Issue 178
Physical description56 p.
SubjectPermafrost; Soils; construction work; equipment; hydroelectric power plants; dikes
AbstractThis report was prepared to record and describe the scope of the research program and the details of the instrumentation designed and installed at Kelsey Generating Station to assess the thawing effect of water on the performance of dykes constructed on perennially frozen ground. The predominant soils at Kelsey are stone-free lacustrine varved "clays" composed of rock flour. Perennially frozen ground was encountered in many of the exploratory holes. The active layer was 1-3 ft in low areas and 6-7 in higher ground. Permafrost was found to a depth of 35 ft. Extensive ice lensing had occurred in the varved clays from a thickness of hair-line to 8 inches. Ground temperatures in permafrost measured to depths of 20 ft in undisturbed ground varied from 30.5 to 3l.5 degrees F. The instrumentation consisted of ground temperature installations using thermocouples in nearby undisturbed ground, underneath the dykes and in the flooded zone. To measure possible dyke movements settlement gauges were installed.
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AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number7943
NPARC number20358553
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Record identifier9c9ced61-e743-4caf-b667-e75aa94f7d7f
Record created2012-07-20
Record modified2016-10-03
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