Numerical Simulation on the Influence of Mining-Induced Fractures Field on Gas Drainage and its Application

Abstract:

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In order to study the influence of mining-induced fractures field on gas drainage,the paper adopts software of numerical simulation COMSOL Multiphysics to simulate gas drainage of coal seam under the condition of high-strength underground mining. The main aspects can be seen as the following: (1) In the case without considering the fractures, gas drainage in single hole, the gas pressure distribution showed a funnel-type distribution in space along the drainage holes around. (2) The orientation and direction of fractures play a major role on the flow field of gas. In the region that exits fractures, the distribution of gas pressure has a clear fluctuation and adjustment.(3) The numerical simulation of coal seam gas drainage that considered the fracture of coal mining, was closer to the true gas flow.

Info:

Periodical:

Edited by:

Xuejun Zhou

Pages:

477-484

DOI:

10.4028/www.scientific.net/AMM.90-93.477

Citation:

S. J. Zhang et al., "Numerical Simulation on the Influence of Mining-Induced Fractures Field on Gas Drainage and its Application", Applied Mechanics and Materials, Vols. 90-93, pp. 477-484, 2011

Online since:

September 2011

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$35.00

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