西沟煤业3513运输顺槽在采动影响下围岩控制技术研究

Study on Surrounding Rock Control Technology under the Influence of Mining in 3513 Transportation Slot of Xigou Coal Industry

山西阳城阳泰集团西沟煤业3513工作面运输顺槽在工作面回采阶段发生围岩变形量较大的情况,影响了煤矿的安全生产以及行人设备的输送运行,为了了解巷道围岩变形量较大的原因,矿方根据现场实测得出围岩变形段较大的原因是在超前动压影响下原先支护方案不能够对围岩深部提供足够的支护强度,矿方根据现场经验以及巷道实际情况确定了锚杆+锚索+金属网的补强优化方案,随后矿方通过FLAC3D对巷道进行了数值模拟,模拟结果表明优化后支护效果显著,现场实测后也发现顶底板最大变形量为178mm,两帮最大变形量为149mm,与补强前相比分别降低了约55.1%以及50.8%,降幅明显,围岩变形得到了控制,从而确保了煤矿的安全生产以及设备、人员的运输。

Shanxi Yangcheng Yangtai Group Xigou Coal Industry 3513 working face transport channel in the working face mining stage, the deformation of the surrounding rock is large, affecting the safe production of coal mines and the transportation of pedestrian equipment, in order to understand the deformation of the surrounding rock of the roadway The reason for the large amount is that the mine side has obtained a large deformation section of the surrounding rock according to the actual field measurement. The original support scheme cannot provide sufficient support strength to the deep surrounding rock under the influence of the forward dynamic pressure. The mine side based on the field experience. As well as the actual situation of the roadway, the reinforcement optimization scheme of the anchor + anchor cable + metal mesh was determined. Then the mine side carried out numerical simulation of the roadway through FLAC3 D. The simulation results showed that the support effect after optimization was significant, and the top floor was found to be the largest after field measurement. The deformation is178 mm, the maximum deformation of the two gangs is 149 mm, which is about 55.1% and 50.8% lower than that before the reinforcement. The reduction is obvious, and the deformation of the surrounding rock is controlled, thus ensuring the safe production of coal mines, equipment and personnel. Transportation.