Research Article
Feb 1963
Oahe Dam: Influence of Shale on Oahe Power Structures Design
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VIEW THE REPLYAuthors: E. A. Johns, F.ASCE, R. G. Burnett, and C. L. CraigAuthor Affiliations
Publication: Journal of the Soil Mechanics and Foundations Division
Volume 89, Issue 1
Abstract
Oahe dam site is a soft-rock site. The shale bedrock is badly faulted, has bentonite sliding planes, a low modulus and low compressive strength. Power structures are located in positions relative to faulting to afford minimum construction difficulty. Structures design is controlled by influence of bedrock as much as by functional requirements. Designers develop a pessimistic attitude in working with this material. Pierre shale disintegrates rapidly when exposed to air. Exposed foundation areas are protected by bituminous sealing, guniting, and concrete slab cover. Exposed tunnel rock is protected by humidity control or by pneumatically placed mortar. Foundation areas are stitched with anchorages to prevent differential rebound. Construction sequence is carefully controlled to prevent overstressing of foundation slope faces.
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Information
Published In
Journal of the Soil Mechanics and Foundations Division
Volume 89 • Issue 1 • February 1963
Pages: 95 - 113
Copyright
© 1963 American Society of Civil Engineers.
History
Published in print: Feb 1963
Published online: Feb 12, 2021
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Authors
Affiliations
E. A. Johns, F.ASCE
Chf., Structure Design Sect., U.S. Army Engr. Div., Omaha, Nebr.
R. G. Burnett
Head, Special Studies Unit, U. S. Army Engr. Div., Omaha, Nebr.
C. L. Craig
Structural Research Engr., U. S. Army Engr. Div., Omaha, Nebr.
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