摘要
本文以某矿倾斜煤层为例,采用YTJ20型岩层探测记录仪,在巷道围岩进行钻孔,对钻孔不同深度的裂隙分布情况进行探测,探测结果表明:直接顶较破碎、不稳定,煤层破坏较为严重,煤层顶板的破碎范围在1m^1.5m左右,顶板稳定性较好。结合煤层赋存条件和松动圈测试结果,对回采巷道设计了两种支护方案。采用数值模拟方法对两支护方案模拟分析,确定了合理的支护方案。
Based on mine coal seam as an example, this paper adopts YTJ20 type of rock detecting recorder, in roadway surrounding rock drills, fissure distribution of different drilling depth detection, the detection results show that the immediate roof is broken, instability and damage of coal seam is relatively serious, range of broken coal seam in 1 m to 1.5 m or so, roof stability is good. Combining the occurrence condition of coal seam and the loose circle test results, carded out on the roadway, the supporting design, the two supporting scheme is designed. The numerical simulation method of the two supporting scheme simulation analysis, the reasonable supporting scheme is determined.
作者
邢珺
Xing Jun(Tongfa Dongzhouyao Mining Industry Corporation Ltd., Datong Mining Group, Shanxi Datong 03700)
出处
《山东煤炭科技》
2016年第12期18-20,共3页
Shandong Coal Science and Technology
关键词
松动圈
煤层
支护
数值模拟
loose cirde
coal seam
support
numerical simulation
