不同掘进工艺煤与瓦斯流固耦合数值模拟研究.pdf

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????????????????????梁冰,李野(?????,??????????????123000)??:井下***事故严重威胁着煤矿的安全,研究煤与***耦合作用规律并采取相应措施可以有效地防止事故发生。考虑***气体的可压缩性和吸附、解吸特性,假设***气体在煤体孔隙中的流动遵循Darcy定律,建立了考虑爆破因素的煤与***流固耦合数学模型,sol对其求解。结果表明:炮掘对煤体的破坏能力大于机掘;炮掘工艺下,爆破应力对煤体应力、位移的作用大于应力耦合的作用,机掘工艺应该考虑应力耦合的作用;煤层***压力随着煤壁暴露时间的增加而发生改变,整个巷道附近的***压力有降低的趋势,呈现漏斗状分布;煤层上表面煤体竖向位移边界呈以巷道顶端为中心的“O”型分布,且以“O”型中心处的位移值最大。???:???;??;????;????;???????щ??``A:?????``712DT:???:1672-2132(2011)02-0180-05???э???????a???????????`????;?????????????????;????ο???????;????ο?????????????????????aЕ?,?????b?????????????,????????`??э???????????b???????С????,???????????????????С??????????,???????????????????[1]b????,?????????э?,???????????????????????????????????????эb???????э??,??????????????a??????????????????????????b[4-6]????????,?????????????????????????????:????[2,3]bЧ???????????2???
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