煤矿地质构造带对巷道支护影响分析

Analysis of the influence of coal mine geological structure zone on roadway support

随着井下开采深度和范围的增加,矿山压力明显增大,再加上地质条件日趋复杂,给掘进巷道支护造成了较大困难。根据五阳煤矿地质背景,采用大型数值计算软件FLAC3D对不同地质构造下应力分布特征及不同支护方式下巷道围岩变形进行了分析,研究结果表明:对于深井高应力巷道,尤其在构造影响明显区域带,全断面锚杆索控制底鼓比较有效,且能保证巷道的长期稳定。

With the increase of the depth and scope of the underground mining, when the coal mine gradually enters the deep mining stage,the pressure of the mining area increases obviously, and the geological condition is more complicated, which brings great difficulty to the supportof the roadway.According to the geological background of Wuyang Coal Mine, the large-scale numerical calculation of FLAC3D softwarefor different geological structure stress distribution characteristics and different support under roadway surrounding rock deformation are analyzed.The research results show that： for deep and high stress roadway, especially in the area of structural influence, the whole section bolt cablecontrol bottom drum is more effective, and can guarantee the long-term stability of the roadway.