EVALUATION OF CONFORMANCE OF THE RESULTS OF NUMERICAL MODELING AND MINE STUDY OF THE PARAMETERS OF ROCK MASS STRESS-STRAIN BEHAVIOR
Applicability. Evaluation of conformance of the results of numerical modeling, geophysical prediction and full-scale measurements of geomechanical parameters of rock mass is significant for ensuring safe and effective mining of coal seams prone to rock bumps at great depths. The purpose of the work is substantiation of the method of complex prediction of the rock mass geomechanical state in shortwall face mining of thick coal seam prone to rock bumps. The research methods are as follows: numerical modeling of geomechanical processes by means of solving the elastic-plastic problem of the mining geomechanics; underground instrumental measurements of rock deformations in the vicinity of underground workings; methods of geophysical prediction of the rock mass behavior. Results. The conformance of the geomechanical prediction results obtained by different methods is proved; the possibility of synthesis of the obtained results in selection of anti-bump measures for safe mining of coal seams prone to gas-dynamic phenomena is substantiated.