摘要
为了解决大采深条带开采工作面冲击矿压的问题,以肥城矿业集团梁宝寺煤矿3107工作面为研究背景,通过数值模拟、工作面现场实际分析,揭示该工作面沿走向超前工作面支承压力的分布状况,进而对开采期间工作面冲击危险区域进行区域划分。结果表明:随着工作面的推进,前方超前支承压力峰值不断增大,弹性应变能最大值能达到180 k J/m3,均位于煤柱边缘处,并主要积聚在煤层中。
In order to solve the problem of rock burst in coal mine where it is with great mining depth, taking example of Liangbaosi coal mine 3107 working face where belongs to Feicheng mining group as the research backgrounds. Numerical simulation and the generate mechanism of it studied with in measurement to reveal the working face where along the strike of advance distribution of abutment pressure in working face. Then divide the mining working face where it is danger zone during the impact of regional division and numerical simulation result shows that with the increasing of working face advancing front of abutment pressure peak value,the elastic strain energy reaches the energy reaches the maximum value 180 kJ/m3 where are located in the edge of coal pillar,and mainly accumulated in coal seam.
出处
《煤炭技术》
CAS
北大核心
2015年第11期13-15,共3页
Coal Technology
关键词
大采深
条带开采
冲击矿压
数值模拟
great mining depth
partial extraction
rock burst
numerical simulation
