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Effects of porosity, strength and water content on attenuation of stresses generated by subsurface explosions in soils [electronic resource].

Published
Livermore, Calif. : Lawrence Livermore Laboratory, 1977.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 11 : digital, PDF file
Additional Creators
Lawrence Livermore Laboratory and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
As part of the calculational and experimental study on the effects of subsurface explosions (ESSEX), a calculational parameter study was performed to determine the effects of various soil parameters on the ground motion resulting from high explosive (HE) and/or nuclear detonations. Rapid attenuation of stress and particle velocity levels with distance from an underground explosion can significantly affect the range where failure of the material will occur. The effect of various parameters such as available air filled porosity, strength, water content, and initial bulk modulus of the material was studied via the one-dimensional finite difference computer code, SOC. A porous material model was developed in order to vary these parameters consistently. The model agreed well with laboratory test-generated compression and strength data for the types of solids found at the Ft. Polk, LA, test site. Air filled porosity and material strength were found to have large effects on the resulting ground motion. Ten percent air filled porosity leads to an order of magnitude reduction in peak stress, compared to that generated in fully saturated soil, at a distance of 10 meters from a 10-ton high-explosive detonation. The predicted stress and particle velocity levels compare favorably with measurements obtained on HE experiments conducted at the site.
Report Numbers
E 1.99:ucrl-79113
E 1.99: conf-770440-10
conf-770440-10
ucrl-79113
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Other Subject(s)
Note
Published through SciTech Connect.
01/01/1977.
"ucrl-79113"
" conf-770440-10"
American Nuclear Society topical meeting on energy and mineral recovery research, Golden, Colorado, United States of America (USA), 12 Apr 1977.
Bryan, J.; Snell, C.; Walton, O.R.; Thomsen, J.M.; Goodrich, M.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14657661