DETERMINATION OF THE PROCESS OF MASSIF CRUSHING NEAR THE CONTOUR OF AN UNDERGROUND STRUCTURE IN A TRANSTROPIC MASSIF
Keywords:
transtropic massif, underground structure, crack formation, finite element method, Mohr's circles, brittle fracture, ductile deformationAbstract
This article examines the patterns and physical type of failure (brittle or ductile) in rock masses near unsupported and supported underground workings. Using Mohr's circles, the authors formulate a generalized Mohr-Coulomb strength condition for a transtropic medium, taking into account the anisotropy of rock properties. Using the finite element method, the geometric parameters of crack formation zones developing parallel, perpendicular, and at a 45-degree angle to the isotropy plane of a coal seam under the influence of geostatic and tectonic stress fields are modeled.
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