红山煤矿急倾斜煤层巷道稳定性控制技术研究

摘要

为研究红山煤矿急倾斜煤层的巷道破坏机理及其围岩稳定性控制，本文采用理论分析与数值模拟相结合的方法，针对急倾斜煤层水平分段放顶煤开采过程中顶板产生的跨层拱现象，揭示了位于前拱脚的巷道因受到不均衡的支承压力，巷道围岩的变形和破坏会表现出明显的非对称性特征，并提出针对性的支护方案，确保了巷道的变形量满足生产要求。%In order to study on roadway failure mechanism and surrounding rock stability of steep dip coal seam in Hongshan coal mine , adopts the method of theoretical analysis and numerical simulation , aiming at the phenomenon that roof occurs crossing layer arch in the process of steep dip coal seam horizontal section sublevel caving mining, reveals that deformation and failure of roadway surrounding rock obviously have the asymmetric characteristic because of the unbalanced abutment pressure of roadway in front abutment , and puts forward specific supporting scheme , ensures the deformation of roadway to meet production requirements.