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Geology and Foundation Treatment, Williams Fork Dam, Power Plant, and West Dike, Colorado

By
Ernest E. Wahlstrom
Ernest E. Wahlstrom
(
(Dept. Geology
,
University of Colorado
,
Boulder, Colo.
)
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Published:
January 01, 1963

Abstract

The Williams Fork Dam project consists of a thin arch dam constructed on top of an existing gravity-arch dam with appurtenant structures and power house. Foundation rocks consisted of granitic gneiss cut by lenses of mica schist and dikes.

This case history reports on: (1) foundation excavation and characteristics of the granitic gneiss; (2) the consolidation grouting pattern and a detailed account of the record; (3) the cut-off, grout curtain; (4) dental-treatment formula used for detailed foundation treatment of the weathered zones; and (5) foundation geology of the West Dike consisting of young, poorly cemented clays and silts. The project demonstrates the interdependence of structural features in bedrock and the depth and degree of unsound weathered material, excavation and slope stability characteristics, and the grout consumption for consolidation.

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Contents

GSA Engineering Geology Case Histories

Engineering Geology Case Histories Number 4

Parker D. Trask
Parker D. Trask
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George A. Kiersch
George A. Kiersch
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Geological Society of America
Volume
4
ISBN electronic:
9780813759296
Publication date:
January 01, 1963

GeoRef

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