In situ Seismic Investigation, Fort Peck Dam, Montana.
Abstract
A geophysical site investigation consisting of surface refraction seismic, crosshole, downhole, R-wave dispersion, and vibratory tests was conducted along a typical cross section (sta 42+00) of Fort Peck Dam. Three levels along the cross section were selected for test locations: sta 0+35, 4+75, and 23+00. P- and S-wave velocities were determined as a function of depth from ground surface to bedrock. A reasonable amount of redundancy was incorporated into the test program to build a high level of confidence in the data obtained. P-wave velocities, which were obtained from surface refraction, crosshole, and downhole tests, could be collapsed into eight distinct zones along the sta 42+00 cross section. Velocities ranged from 1250 to 7200 fps.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1975
- Accession Number
- ADA006510
Entities
People
- John E. Horn
- Joseph R. Curro Jr.
- Robert F. Ballard Jr.