远程保护层开采上覆煤岩层移动规律  

Sudy on the numerical simulation of the overlying strata movement of the far-distance protective coal seam

作　　者：熊祖强[1] 王文[1] 李化敏[1] 

机构地区：[1]河南理工大学能源科学与工程学院,河南省焦作市454000

出　　处：《中国煤炭》2009年第7期44-46,共3页China Coal

基　　金：高等学校博士点学科专项科研基金(20070460001);河南省重大公益性科研项目(0623021400);河南理工大学博士点基金(B2008-52);河南省科技计划项目(082102240094)

摘　　要：采用UDEC离散元数值模拟研究方法,对平顶山矿区远程下保护层开采条件下上覆煤岩层卸压特征、膨胀变形特征进行了分析。结果表明,在采动或重复采动作用下,上覆煤层卸压特征明显,透气性增加显著。The stress, deformation, and movement of upper coal ~ rock seams are simulated by the UDEC with the down protective coal seam exploited. The results show that the stress can be relieved greatly, and the deformation regions in the protected coals seam shows M--shaped form, symmetrically distributed in two sides, and the permeability enhances greatly, though the distance and relative distance between the three groups of coal seam are every far without precedent at home and aboard.

关 键 词：远程保护层 岩层移动 数值模拟 

分 类 号：TD823.82[矿业工程—煤矿开采] TD325[矿业工程—矿山开采]