Krichuk S. Prediction of seismic stability of surface buildings under the explosion of cylindrical charges with use of computer methods

The thesis is devoted to solving the actual scientific task, which includes establishing the regularities of seismic blast waves propagation in the soil massif and their interaction with the protected object considering frequency, physical, mechanical and geometrical parameters of subsoil and construction by the numericalsimulation. Investigation of the seismic blast waves propagation in soil massif is based on their superposition under the action of explosion of cylindrical charges group considering the physical and mechanical properties of ground, detonation characteristics of explosives and the geometric parameters of hole charges. It is theoretically shown that the single charge explosion has less seismic effect in comparison with the group charges explosion for instantaneous explosion, which is confirmed by experimental date by other authors. However, the use of short-delay explosion with optimal delay intervals and distances between the charges within the group reduces the seismic effect of the explosion at the same time achieving technical parameters of blasting.