Numerical simulations for coupled rock deformation and gas leak flow in parallel coal seams |
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| Authors: | Peide Sun> |
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| Institution: | (1) Department of Environmental Engineering, Hangzhou University of Commerce, Hangzhou, 310035, China;(2) Key Laboratory for the Exploitation of Southwestern Resources and Environmental Disaster Control Engineering, Ministry of Education, Chongqing Univ., Chongqing, 400044, China |
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| Abstract: | Based on the new viewpoint of interaction mechanics for solid and gas, gas leakage in parallel deformable coal seams can be
understood. That is, under the action of varied geophysical fields, the methane gas flow in a double deformable coal seam
can be essentially considered to be compressible with time-dependent and mixed permeation and diffusion through a pore-cleat
deformable, heterogeneous and anisotropic medium. From this new viewpoint, coupled mathematical models for coal seam deformation
and gas leak flow in parallel coal seams were formulated and the numerical simulations for slow gas emission from the parallel
coal seams are presented. It is found that coupled models might be close to reality. Meanwhile, a coupled model for solid
deformation and gas leak flow can be applied to the problems of gas leak flow including mining engineering, gas drainage engineering
and mining safety engineering in particular the prediction of the safe range using protective layer mining where coal and
gas outbursts can efficiently be prevented.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | coupled models gas leak flow numerical simulation parallel coal seams solid deformation |
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