摘要
为了解决义安矿工作面瓦斯涌出量大,上隅角瓦斯浓度经常超限问题,依据覆岩采动裂隙演化规律和"O"形圈理论,提出在工作面顶板布置高抽巷抽采采空区瓦斯,通过理论计算与数值模拟对采空区上覆岩层"两带"高度范围进行研究,确定裂隙带发育范围。而为了防止高抽巷被破坏,将高抽巷的设计层位选定为1.5倍采高。
In order to solve the gas emission quantity of Yi＇an mine working face, the upper corner gas excess problem, on the basis of overlying fissure evolution law and ＂O＂ ring theory, proposed the layout of high level suction roadway in the working face roof to extract the gobs gas, through theoretical calculation and numerical simulation to study the ‘two zone＇ height of overlying strata in gobs, determined the fracture zone development scope. In order to prevent the destruction of the high level suction roadway, and selected the location of the high level suction roadway being 1.5 times for the mining height.
出处
《山东煤炭科技》
2015年第2期58-59,62,共3页
Shandong Coal Science and Technology
关键词
高抽巷
数值模拟
裂隙带
high level suction roadway
numerical simulation
fracture zone
