ABSTRACT
The magnitude of seismic effects on the rock mass if is determined by structural-textural features of rocks (stratification, cleavage, and joints), composition (mineral) and the bonding nature between individual grains. The specific values attributed to the characteristics of seismic waves are related to soil conditions. The seismic effect of a blast is reduced during the transition of a frozen soil to a thawed soil. Therefore, it is essential to know the properties of frozen soils, particularly their structural features, so that protection may be guaranteed to the buildings erected on such soils. The patterns of seismic wave propagation in hard rocks during blasting have their own distinguishing features. Seismic microregionalisation in pit conditions is based on the general principle of establishing zones to justify a set of blast parameters to obtain the desired fragmentation. The foregoing assessment of rocks based on modularity and fissuring is one of the constituent elements in the method of seismic microregionalisation in exploiting mineral deposits.
