Authors: T.L. Kim, V.V. Dyrdin

Title of the article: A certain type of gas-dynamic phenomena depending on the porosity of coal seams in the decomposition of gas hydrates

Year: 2016, Issue: 2, Pages: 3-6

Branch of knowledge: Earth sciences

Index UDK: 622.831.322

DOI: -

Abstract: The publication is devoted creation of a method of the forecast gas-dynamic phenomena occurring under the influence of gas hydrates in coal seams with application of a method of mathematical modelling. For the first time the minimum humidity at which formation of gas hydrates in coal seams is is possible is found. During work there was a definition of speed of a dissociation of hydrates of gas depending on a size of corpuscles by a method of mathematical modelling. Also conformity is found between velocity of move of boundary line of a dissociation of gas hydrates in space of pores of coal and velocity of extending of a wave of crushing. The interconnection of allocation of gas pressure in a band of edge of a layer of coal after a dissociation of gas hydrate depending on its saturation capacity and taking into account a changing coefficient of permeability is spotted. Including it has been spotted that the kind gas-dynamic processes in the presence of gas hydrates in space of pores of coals depends on critical value of permeability in a band of edge of a coal seam.

Key words: gas-dynamic phenomena the rate of dissociation gas hydrates the permeability coefficient sudden emission

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