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Information × Registration Number 0205U004501, 0102U004564 , R & D reports Title The researching of the influence of coal inhomogeneity of the processes of the redistribution of stresses and the motion of methane near working by underground extraction of useful mineral in low depths popup.stage_title Head Khapilova N.S., Registration Date 05-04-2005 Organization Institute of Applied Mathematics and Mechanics of National Academy of Sciences of Ukraine popup.description2 The stressed-strained state of rock massif by mining of inhomogeneous coal seams by drifts is researched. The numerical estimation of change of the natural permeability of rocks near hydrorupture crack, formed from earth's surface, is given. The formula of quantity of methane, which is exuded to the crack, is obtained. The algorithm of solving problem about the definition of coefficients of two gaseous seams, exposed one hole, is suggested Product Description popup.authors popup.nrat_date 2020-04-02 Close