Assessment of Horizontal External Stresses in Vorkuta Mine Field by Seismic Tomography Data
V. N. ZAKHAROV, L. A. NAZAROVA, M. I. PROTASOV, L. A. NAZAROV, A. V. PANOV, A. P. AVERIN
Academician Melnikov Institute of Integrated Mineral Resources Development-IPKON, Russian Academy of Sciences, Kryukovskii tupik 4, Moscow, 111020 Russia
Keywords: углепородный массив, объемная геомеханическая модель, напряженно-деформированное состояние, 3D томография, обратная задача, коэффициент бокового распора, coal-and-rock mass, 3D geomechanical model, stress-strain state, 3D tomography, inverse problem, lateral earth pressure coefficient
Abstract
3D geomechanical model of Vorkuta Mine, Pechora Coal Basin, has been developed and implemented numerically. By the data on dynamic events recorded by stationary seismic stations, tomography of the study object is performed, and velocity of elastic waves is recovered in the illuminated area of the object. The boundary value inverse problem on horizontal external stresses by stress distribution found using empirical relations between elastic wave velocities and stresses determined in the laboratory-scale experiments is formulated and solved.
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