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Journal of Mining Sciences

2020 year, number 4

Assessment of Deformation of a Coal Seam and a Roadway through the Identification of Top Coal Caving Parameters

M. V. Kurlenya, V. E. Mirenkov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: порода, пласт, выработка, параметр, обратная задача, некорректность, уравнение, решение, Rock, seam, roadway, parameter, inverse problem, ill-posedness, equation, solution


The stress-strain behavior of piecewise-homogenous rock mass surrounding a horizontal roadway is defined by the natural stress field and by mechanical constants of rocks and coal. The developed algorithm of successive approximations for the characteristics of rock mass with a roadway integrates all known partial algorithms into a class of difficult problems. The authors propose solving inverse problems by identification of top coal caving parameters from the numerical experiment and using additional information on geomechanical behavior of coal seam ahead of face.