煤矿安全2019，Vol.50Issue(4)：14-18,5.DOI:10.13347/j.cnki.mkaq.2019.04.004
本煤层超前卸压瓦斯渗流规律的影响因素研究
Influencing factors of Gas Seepage flow in Advance pressure Relief Area of a Mining Seam
摘要
Abstract
Experimental schemes were designed for the entire evolution of the stress in the coal mass in front of the working face, and an experimental study on methane seepage from the coal mass in the advanced pressure relief area was conducted. Fitting functions for the permeability of the coal sample and its vertical stress were obtained by fitting the experimental data. A numerical calculation model was established with these fitting functions at different stages. The effect of mining height and mining depth on the law of methane seepage in the advanced pressure relief area was numerically simulated. With the increase of mining height and depth, the influence range of the advanced abutment pressure increased, and the peak position of the advanced abutment pressure moved away from the coal wall. However, the peak value of the advanced abutment pressure decreased constantly with the increase of mining height but increased with the increase of mining depth.关键词
瓦斯抽采/瓦斯渗流/数值模拟/绿色开采/煤与瓦斯共采Key words
methane extraction/gas seepage/numerical simulation/green mining/coal and gas simultaneous extraction分类
矿业与冶金引用本文复制引用
吴冬梅,赵伟,侍大军,仇海生..本煤层超前卸压瓦斯渗流规律的影响因素研究[J].煤矿安全,2019,50(4):14-18,5.基金项目
国家自然科学基金资助项目(51374152) （51374152）
山西省自然科学基金资助项目(201301142-3) （201301142-3）
山西省研究生联合培养基地人才培养资助项目(2017JD15) （2017JD15）
