Snigur V. Substantiation of forecast and calculation parameters of bottom heaving in mine workings of Western Donbass mines

Established regularities of parameters structure influence and mechanical proper-ties of immediate and main bottom rocks, depth of in-seam mine working location and its cross-section area on bottom heaving intensity are defended. On the base of all these factors regression equations for value calculation are obtained. These results are achieved on the massif data of multivariant calculations of stress-strain state of massif soft foliated rocks around in-seam mine working on spatial geomechanical models that take into account information on geological investigations of structure and properties of coal-bearing strata of Western Donbass rocks, action of weakening factors and also real passport of preparation and mine workings supports. All calculations are realized in elastic-plastic position on full diagram of rock deformation. Uncertainty of bottom heaving behavior depending on rock structure and properties of in-seam mine working are identified on the basis of complex diagrams analysis of rock full displacements of immediate ad main roof and diagrams of each component. For explanation of all these tendencies, mechanism of heaving development that classified into three main schemes and fully containing real range of changing of mine-geological conditions of in-seam mine working supporting is opened. Mine-geological conditions division on heaving development character is extending to criteria equation that allow numerically deter-mine scheme of process behavior. Methodology and algorithm of calculation of in-seam mine workings bottom heaving that allow to develop technical solutions on its steadiness increasing at the design stage are developed. Basic content of this work is described in 3 collective monographs, 2 articles that were published in specific scientific publications, 2 articles in international collections, 3 articles in materials of international conference and manufacturing instructions.