Effect of Deformation Properties of Discontinuities on Intensity of Induced Seismicity Sources in Rocks. Part II: Laboratory and Numerical Experiments
A. M. BUDKOV1, G. G. KOCHARYAN1,2, A. A. OSTAPCHUK1, D. V. PAVLOV1
1Institute of Geosphere Dynamics, Russian Academy of Sciences, Leninskii pr. 38, Bld. 1, Moscow, 119334 Russia
2Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudny, 141700 Russia
Keywords: техногенная сейсмичность, эффективность сейсмического излучения очагом, горно-тектонические удары, жесткость трещин, лабораторный и численный эксперимент, induced seismicity, seismic radiation efficiency, tectonic shocks, fracture stiffness, laboratory and numerical experiment
Abstract
Variations in strength and stress state of rocks fail to explain the difference observed in efficiency of seismic radiation from separate sources within the limits of the same mine field. The laboratory and numerical experiments show that insignificant variation in ultimate strength of a fracture and, thus, different shear fracture stiffness results in radical change in the seismic event efficiency. The experimentally obtained relations between the key parameters should be taken into account in geomechanical modeling of full-scale objects.
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