DEVELOPMENT OF COMPLEX METHOD OF GEOMECHANICAL PROCESSES STUDY BY THE MEANS OF PHYSICAL AND NUMERICAL MODELING
A method that combining numerical and physical modeling of geomechanical processes in the surrounding rock mass of entry at complex structure seams is developed. The testing of mathematical modeling is performed using physical modeling on equivalent materials. The design of the laboratory stand on which the physical experiment has been performed is described. Two sandy-paraffin models is tested: the first one - the entry on the coal seam without a rock layer; the second one - the entry on the coal seam with a rock layer. Due to the marks placed on the front side of the model, the vertical displacement is determined by the method of photographic fixation. Numerical modeling using the initials of the physical test is carried out. The two-dimensional problem is solved. The conformity of the mathematical model is confirmed using a comparative evaluation of the results of numerical modeling and a laboratory test. The existence of a rock sub-layer in the coal seam structure has a significant effect on the displacement of rock mass in the roof and the bottom of an entry is find out.