Cense Explosion Test Program. Report 1. Cense 1. Explosions in Sandstone
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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CENSE Coupling Efficiency of Near-Surface Explosions was a high- explosive test program designed to obtain an understanding of the effects of burst position on cratering, ground shock, and related phenomena in several geologies. Reports 1 through 3 are data reports report no. 4 provides more complete analysis and data comparisons for the overall program. The objective of CENSE 1 was to study the effects of burst position on ground shock, airblast, and cratering in rock sandstone. Eight tests were conducted using 1000-pound liquid nitromethane spheres. Burst positions ranged from an elevated airblast, noncratering charge position of 6 feet to depths of approximately 10.5 feet. Both apparent and true craters were measured for all events. Near-surface 2- foot depth vertical and horizontal ground motions were measured on all except the deepest shot. For that shot, the near-surface gage array was repositioned at shot depth 10.5 feet. Surface airblast was measured for all but the deepest detonation. In addition to the near-surface motions, vertical motions were measured directly beneath the explosion on all events. No stress measurements were made on CENSE 1. Data are presented in the form of time histories and amplitude-distance plots.
- Geology, Geochemistry and Mineralogy