Movement of the ground in Rayleigh waves produced by underground explosions

Author: Simonenko V.   Shishkin N.   Shishkina G.  

Publisher: Springer Publishing Company

ISSN: 0021-8944

Source: Journal of Applied Mechanics and Technical Physics, Vol.47, Iss.4, 2006-07, pp. : 461-471

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Abstract

Analytic representations are obtained for the displacement and stress fields in the Rayleigh surface wave (R-wave) generated in an elastic half-space by an internal source that produces the same seismic P-wave as an underground explosion. Oscillograms, particle trajectories, and stresses in the half-space and on its surface are calculated. Relations for the energy flux in the R-wave are obtained. For rock salt, the fraction of the explosion energy transferred to the R-wave is estimated. It is established that this fraction can reach values of about 1% of the total explosion energy if the explosion is a contained one. As the charge depth is increased, the energy of the R-wave decreases in approximately inverse proportion to the depth.