A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
In Situ Seismic Investigation of Coyote Dam
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 gravel drain having a velocity of 1600 fps. The foundation materials were determined 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. (Author)
In Situ Seismic Investigation of Coyote Dam
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 gravel drain having a velocity of 1600 fps. The foundation materials were determined 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. (Author)
In Situ Seismic Investigation of Coyote Dam
R. E. Wahl (author) / J. L. Llopis (author) / R. F. Ballard (author)
1981
53 pages
Report
No indication
English
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