Determination of Stability of Mechanized Facilities with Telescopic Lids in Relations with Mountains

Research is presented to determine the parameters of the stress-strain massif of rocks around the powered support, as well as the factors affecting their stability. A vertical section of the array around the lining is considered. As a design scheme, a rectangular plane was selected, which is in a plane-deformed state and which is divided by a grid of triangular elements, with the corresponding boundary conditions. A mathematical model of the stability of the support from mining and geological and mining technical factors has been obtained. As a result of underground workings, the equilibrium-stressed state of rocks is disturbed. A redistributed stress field is formed around the workings, while the impact of mountain pressure on the surrounding massif, pillars and supports occurs. The magnitude and nature of the mountain pressure depend on many factors. Some of them are determined by natural conditions, others are created during the development of deposits. If measures are not taken to adequately select the type of fastening of workings in accordance with the current loads, then over time, a violation of stability and destruction of the surrounding mining array may occur.