Investigation of processes of rocks deformation and the earth’s surface subsidence during underground coal mining

Many years of coal production have led to significant changes in the stability of the rock mass and the earth's surface in the territory of the coal mining regions of Ukraine. The reasons for such changes are the increase of fracture and decrease of the strength of rocks, stratification and hanging of rocks in the boundary parts of workings, the presence of interstices in the coal-face workings, large-scale subsidence of the earth's surface, underworking of a considerable number of buildings, structures and infrastructure.