Skip to Main Content
Book Chapter

Hydrogeology of the Jointed Dolomites, Grand Rapids Hydroelectric Power Station, Manitoba, Canada

By
R. H. Grice
R. H. Grice
Department of Geological Sciences, McGill University, Montreal, Canada; formerly engineering geologist
,
H. G. Acres and Co., Ltd.
,
Niagara Falls, Canada.
Search for other works by this author on:
Published:
January 01, 1968

Abstract

The Grand Rapids generating station, completed in 1964, is a 330,000 kilowatt hydroelectric installation located near the mouth of the Saskatchewan River on the west side of Lake Winnipeg, Manitoba, Canada. The operating head is some 130 feet. The 2000-square-mile reservoir is confined at its eastern end by concrete intake and spillway structures and 16 miles of earth dikes with a maximum height of 100 feet. The single-line grout curtain beneath the dike axes is about 18 miles long.

The reservoir area is underlain by Ordovician and Silurian dolomites with a scattered cover of tills and glaciolacustrine silts. There are many sinkholes in the dolomites.

The distribution of joints and joint fillings in the different lithological units were mapped and statistically analyzed. A quantitative ground-water flow technique was devised using the natural vertical water velocity profiles in uncased NX-sized drill holes.

The exploration and research program described was an essential part of the design phase for the grout curtain. Since completion, continuous observations have demonstrated the evolution of the induced ground-water regimen, confirmed the effectiveness of the control measures (grout curtain and pressure relief holes), and provided data for the development and further testing of the analytical procedures for ground-water flow analysis.

You do not currently have access to this article.

Figures & Tables

Contents

GSA Engineering Geology Case Histories

Engineering Geology Case Histories Number 6

George A. Kiersch
George A. Kiersch
Search for other works by this author on:
Geological Society of America
Volume
6
ISBN electronic:
9780813759319
Publication date:
January 01, 1968

GeoRef

References

Related

Citing Books via

Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal