Research Article
Jun 1970
River Diversion for Boundary Dam
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VIEW THE REPLYAbstract
Diversion of the Pend Oreille River at Boundary Arch Dam site was accomplished by constructing two rockfill cofferdams and a 42-ft horseshoe tunnel in the left abutment. Model tests determined construction procedures for the cofferdams. Excavation of the tunnel was performed from the inside of the arch dam abutment via an adit from the underground power plant. Opening of the portals and rerouting of the river was by a series of singular rock blasts. The tunnel floor was left unlined and gunite was applied to the side walls and roof. The scheme accommodated river discharges during the low flow periods only, and flood flows were discharged over the partly completed arch dam. The diversion tunnel was finally closed by lowering a counterbalanced, arched, steel gate into the flow at the tunnel portal. Concrete plugs closed the access tunnel during diversion and the diversion tunnel after its closure.
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Information & Authors
Information
Published In
Journal of the Power Division
Volume 96 • Issue 3 • June 1970
Pages: 319 - 330
Copyright
© 1970 American Society of Civil Engineers.
History
Published in print: Jun 1970
Published online: Feb 11, 2021
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Authors
Affiliations
Adolf A. Schilling, F.ASCE
Asst. Project Manager, Bechtel Corporation, Honolulu, Hawaii
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.