摘要
平煤集团六家煤矿井田范围内可采煤层较多且煤层间距较近属于近距离煤层,煤层间相互影响作用明显,本文主要研究的六家矿SⅡS16-7工作面运输顺槽,在巷道掘进期间围岩变形量就很大,在工作面回采时巷道围岩稳定性更差。通过对巷道变形进行松动圈测试,并运用FLAC3D数值模拟手段,分析了巷道在内错距离为2m、4m、6m三种情况下的围岩变形分布情况,确定了6-7煤层回采巷道的最佳布置位置。
There are many minable seams in Liujia Coal Mine and the distance among the coal seams is close, so they are close distance coal seams and the mutual influence of these coal seams is obvious. The surrounding rock deformation of SIIS16-7 face transport trough of Liujia Coal Mine this paper studied is large during the roadway excavation, and the rock stability is worse when the face mining. Through the loose circle test of tunnel deformation, this paper uses FLAC3D numerical simulation for analyzing the surrounding rock deformation distribution of the roadway under the three cases of wrong distance of 2m, 4m and 6m, so as to determine the best layout position of coal mining roadway of 6-7 coal seams.
出处
《价值工程》
2015年第11期133-135,共3页
Value Engineering
关键词
近距离煤层
巷道布置
煤柱
数值模拟
close distance coal seams
roadway layout
coal pillar
numerical simulation
