ON POTENTIONAL REDUCTION AND IDENTIFICATION OF SEISMIC SIGNAL OF UNDERGROUND NUCLEAR EXPLOSION

V.A. Bychenkov, N.S. Zhilyayeva, G.V. Kovalenko, I.I. Kuznetsova, V.F. Kuropatenko, A.V. Skovpen, L.V. Khardina
VANT. Ser.: Mat. Mod. Fiz. Proc 1996. Вып.3. С. 18-26.

      The paper presents the results of computational and theoretical research on seismic effects of contained underground nuclear explosion in: air cavities; alluvium-type porous soil; cavity filled with porous matter, graphite in particular. The following basic results have been obtained. Radius of air cavity providing maximum attenuation of seismic signal is ~ 32 m/kt^1/3. The paper presents a model of weakened rock nearby cavity. The conditions of explosion in alluvium exist when seismic signal practically vanishes at low frequencies. At explosion in alluvium seismic sources of nuclear and chemical explosion may distinguish essentially. The 0,01 g/cm³-density graphite in the 15 m/kt^1/3-radius cavity reduces seismic efficiency of explosion in granite by more than 50 times.