Research on Effect Law of Protected Coal Seam Permeability Induced by Mining Protective Coal Seam
To obtain change law of protected coal seam permeability induced by mining protective coal seam, a number of numerical simulation tests were carried out using the numerical analysis code FLAC(3D) to investigate stress distribution of surrounding rock of protective seam. The results show that the more mining length of protective coal seam in a cetrain length along tilt direction, the higher permeability of upper and lower protected coal seam. Influence degree to permeability of lower protected coal seam is less than upper protected coal seam induced by mining protective coal seam. The largest influence area is located at the above middle position of goaf along inclination direction in mine area. This result has important guiding significance in precaution and treatment of outburst of coal and gas.
protective coal seam mining permeability numerical simulation coal and gas outburst
BI Ye-wu LIANG Bing
Safety Engineering College, Heilongjiang Science and Technology Institute, Harbin, 150027, china Department of Mechanics and Engineering Sciences, Liaoning Technical University, Fuxin, Liaoning, 12
国际会议
2009 International Forum on Porous Flow and Applications(第十届全国渗流力学学术会议)
武汉
英文
607-610
2009-04-26（万方平台首次上网日期，不代表论文的发表时间）