Numerical Simulation of Coal Deformation and Gas Seepage After Cutting in Low-Permeability Coal Seams
According to the gas drainage difficult problem, current research found that high pressure water jet cutting coal seam is effective methods to improve permeability in low-permeability coal seams. According to the basic theory of fluid-solid coupling, considering the influence of gas seepage for the constitutive relation, based on the conservation of mass and non-linear seepage equation, proposed the mathematical model of seepage stress coupling of the Darcy-Brinkman equations simultaneousness. Through using COMSOL software to simulate coal deformation and gas nonlinear seepage rule under the water jet cutting in low-permeability coal seams, improve the mechanism of pressure relief and permeability enhancements under high pressure water jet cutting coal seam in low low-permeability coal seams.
low-permeability coal seams high pressure water jet cutting coal deformation gas nonlinear seepage
JIANG Yong LIANG Bing
School of Mechanics and Engineering, Liaoning Technical University, Fuxin, Liaoning, 123000
国际会议
成都
英文
616-620
2010-10-10（万方平台首次上网日期，不代表论文的发表时间）