Study on the seepage law of coal-rock fragments in goaf
In order to have a good master to the gas flow and methane emission in goaf, it was presented that the coal-rock fragments in caved zone were in nonsaturation and the reason was also analyzed also. The goaf coal-rock fragments seepage was investigated based on the displacement curve of voussior beam theory in mathematic method, the distribution of caved zone permeability was described as a dustpan type and a semitheoretical equation was derived. The model and equation were put into a CFD simulation software, the simulation result was made out and matched very well comparing to lots of field dates.
coal-rock fragments caved zone non-saturation permeability
Q. Xu S.Q.Yang B. H. Yu J. L. Xu
Faculty of safety engineering, China University of Mining & Technology, Xuzhou, 221008, Jiangsu,Chin State Key Laboratory of Coal Resources and Mine Safety CUMT, Xuzhou, 221008, Jianysu, China
国际会议
徐州
英文
229-238
2009-09-24（万方平台首次上网日期，不代表论文的发表时间）