THE STRESS STATE OF THE GEOPHYSICAL MEDIUM UNDER SPACE-TIME DISPERSION OF PULSED LOADINGS

Abstract

A closed set of simultaneous equations, which takes into account the relaxation properties of a medium with an internal structure, has been developed. Research was conducted on methods to control the stress state of a rock salt massif upon interaction with explosion waves. It was established that the optimum increase in dilatancy is reached when the time delay between triggering of the charges is 40-60 % of the action time of the excess pressure, and the spacing between them equals 15 charge radii. Studies were conducted on the effect of the relaxation time and of the "frozen" and equilibrium ratio of sonic velocities on the stress state caused by pulse loads.