Fedotov S. Basic regularities of the distribution of stresses in a rock mass at an underground coal mining and gas recovery.

The purpose of work - to establish the regularities of the distribution of stresses in vicinity of underground workings and technogenic cracks for a substantiation of up-to-date ways coal mining and gas recovery and improve of safety of works in the mines. In the work, problems on the stressed-strained state of an anisotropic massif by mining of inclined and horizontal coal seams are solved. The influence of technology factors (the support, the pillar, humidifying of a coal seam) on the distribution of abutment pressure in the coal seam and the length of the plastic zone is established. A quantitative assessment of the influence of the stressed state on the change of filtration characteristics of a rock mass near the vertical hydrorupture crack formed from a wall of a gas well is given. The regularities of the distribution of stresses in vicinity of the gas horizon located in the field of influence of the working longwall is investigated.