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Effect of the earthquake of March 27, 1964, on the Eklutna Hydroelectric Project, Anchorage, Alaska, with a section on television examination of earthquake damage to underground communication and electrical systems in Anchorage

Professional Paper 545-A
By:  and 
https://doi.org/10.3133/pp545A

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Abstract

The March 27, 1964, Alaska earthquake and its associated aftershocks caused damage requiring several million dollars worth of repair to the Eklwtna Hydroelectric Project, 34 miles northeast of Anchorage. Electric service from the Eklutna powerplant was interrupted during the early phase of the March 27 earthquake, built was restored (intermittently) until May 9,1964, when the plant was closed for inspection and repair. Water for Eklutna project is transported from Eklutna Lake to the powerplant at tidewater on Knik Arm of Cook Inlet by an underwater intake connected to a 4.46-mile tunnel penstock. The primary damage caused by the earthquake was 1at the intake structure in Eklutna Lake. No damage to the power tunnel was observed. The piles-supported powerplant and appurtenant structures, Anchorage and Palmer substations, and the transmission lines suffered minor dammage. Most damage occurred to facilities constructed on un-consolidated sediments and overburden which densified and subsided during the earthquake. Structures built on bedrock experienced little or no damage. Underground communication and electrical systems in Anchorage were examined with a small-diameter television camera to locate damaged areas requiring repair. Most of the damage was concentrated at or near valley slopes. Those parts of the systems within the major slide areas of the city were destroyed.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Effect of the earthquake of March 27, 1964, on the Eklutna Hydroelectric Project, Anchorage, Alaska, with a section on television examination of earthquake damage to underground communication and electrical systems in Anchorage
Series title Professional Paper
Series number 545
Chapter A
DOI 10.3133/pp545A
Year Published 1967
Language English
Publisher U.S. Government Printing Office
Publisher location Washington, DC
Contributing office(s) Earthquake Science Center
Description vi, 30 p.
Larger Work Type Report
Larger Work Subtype USGS Numbered Series
Larger Work Title The Alaska earthquake, March 27, 1964: effects on transportation, communications, and utilities (Professional Paper 545)
Country United States
State Alaska
City Anchorage
Other Geospatial Eklutna Hydroelectric Project
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