论文部分内容阅读
针对高家堡煤矿42101措施巷受冲击动载影响导致围岩变形量大、巷道破坏严重的情况,通过锚杆工作阻力监测、理论分析及数值模拟等手段,结合巷道围岩现场变形破坏情况,分析了深部动载作用下煤巷围岩矿压显现特点及支护结构的支护效果。在此基础上,提出了相应的围岩控制对策及优化支护方案,并进行了考虑多次动载作用的不同支护方案下巷道围岩变形数值模拟计算,分析了优化方案的有效性及合理性。
Aiming at the situation that the surrounding rock mass is large and the roadway is damaged seriously due to the influence of impact dynamic load in 42101 measure lane of Gaojiabao Coal Mine, by the means of monitoring the working resistance of bolt, theoretical analysis and numerical simulation, combined with the field deformation and damage of surrounding rock, This paper analyzes the characteristics of mine pressure and the support effect of supporting structure under deep dynamic loading. On this basis, the corresponding surrounding rock control strategies and optimization support schemes are proposed, and the numerical simulation of surrounding rock deformation under different support schemes considering multiple dynamic loads is carried out. The effectiveness of the optimization scheme is analyzed. rationality.