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https://hdl.handle.net/11681/10342| Title: | In situ seismic investigation of Coyote Dam |
| Authors: | United States. Army. Corps of Engineers. San Francisco District. Wahl, Ronald E. Llopis, José L. Ballard, Robert F. |
| Keywords: | Coyote Dam Russian River California Seismic surveys Elastic waves Seismology Seismic investigations Seismic refraction |
| Publisher: | Geotechnical Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) ; GL-81-1. |
| Description: | Miscellaneous Paper Abstract: An in situ seismic investigation consisting of surface refraction seismic, downhole, and crosshole tests was conducted at Coyote Dam, near Ukiah, California. Compression- and shear-wave (P- and S-wave) velocities as a function of depth were determined at two cross sections of the dam (sta 118+00 and 126+00). P- and S-wave velocity profiles were also determined for the materials which comprise the left abutment. The profiles constructed for the dam showed that P- wave velocities in the core increased from 2100 to 4000 fps with depth. The random fill section of the dam was determined to have a velocity of 3600 fps. A horizontal gravel blanket drain underlying the random section was determined to have a velocity of 4800 fps. The P- wave velocity of the dam's foundation materials had velocities ranging between 4100 and 7600 fps. The S-wave velocity profiles showed that velocities in the dam's core increased from 850 to 1250 fps except at sta 126+00 where a velocity of 950 fps was noted for the lower 50 ft of core material. The random fill section of the dam had a velocity of 1400 fps, with its underlying horizontal fravel drain having a velocity of 1600 fps. The foundation materials were determines to have velocities between 1450 and 2650 fps. The materials on the left abutment displayed P-wave velocities ranging between 1600 and 5500 fps. The S-wave velocities for these materials ranged between 850 and 1950 fps. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/10342 |
| Appears in Collections: | Miscellaneous Paper |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| MP-GL-81-1.pdf | 5.73 MB | Adobe PDF |  View/Open |