Evolution of microseismicity parameters depending on geomaterial deformation stages

The paper describes the laboratory tests on deformation of specimens made of artificial geomaterials simulating rock mass composed of two alternating beds of different hardness and different bedding angles. In the course of loading, stresses, strains and microseismic emission signals are continuously and concurrently recorded. The analysis of the time-deformation curve is reflective of the step-wise behavior of deformation and allows determining features of change in parameters of microseismic signals at various deformation stages.