摘要
针对山西集广煤矿9#和10#极近距离煤层同采的工程背景,对上位煤层开采后对底板的影响进行了力学理论分析,得出上煤层开采对底板的破坏深度,评估了下煤层回采巷道布置于几种位置的可行性,并利用FLAC3D数值模拟得出外错的最佳距离。经过现场工业性试验,巷道支护效果较好,未出现强烈的矿压显现。
Based on 9# and 10# extremely close distance coal seam mining engineering background in Ji guang coal mine in Shanxi Province,had theoretical analysis for the influence of upper coal seam mining on the lower floor.It is concluded that the depth of the damage of the floor after upper coal mining.The assessment of the coal seam mining under the arrangement in the feasibility of several kinds of location,and the optimum distance of external fault of FLAC3 Dnumerical simulation.After the site industrial test,the roadway support effect is good,does not appear strong pressure.
出处
《煤炭技术》
CAS
北大核心
2014年第9期109-111,共3页
Coal Technology
关键词
极近距离煤层
巷道布置
底板破坏
力学分析
数值模拟
extremely close distance coal seam
roadway layout
floor damage
mechanics analysis
numerical simulation
