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Seismic Analysis of Horse Creek Dam, Hudson, Colorado

by W. A. Charlie, Colorado State Univ, Dep of Civil, Engineering, Fort Collins, CO, USA,
G. T. Jirak, Colorado State Univ, Dep of Civil, Engineering, Fort Collins, CO, USA,
D. O. Doehring, Colorado State Univ, Dep of Civil, Engineering, Fort Collins, CO, USA,



Document Type: Proceeding Paper

Part of: Measurement and Use of Shear Wave Velocity for Evaluating Dynamic Soil Properties

Abstract:

On April 8, 1981, six days after a Richter magnitude 4. 0 earthquake, inspectors from the Colorado State Engineer's Office discovered a small crack in outboard side of Horse Creek Dam. Its presence prompted inspectors to request that the dam owners monitor the condition. Eight weeks after the earthquake, the State Engineer's Office was notified that the crest of the structure had settled approximately three feet and the outboard side of the dam was bulging along a zone 175 meters long. The purpose of this study is to determine if the earthquake was a significant factor contributing to the distress of the Horse Creek Dam during the weeks that followed.

Subject Headings: Dam failures | Embankment dams | Earthquakes | Soil pressure | Soil analysis | Soil dynamics | Rivers and streams | Colorado | United States

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