43307工作面过42煤残余煤柱矿压显现规律数值模拟研究

通过对榆家梁煤矿43307工作面矿压显现的分析,建立工作面回采计算模型,利用数值模拟方法研究工作面推进与工作面压力分布情况,并给出矿压显现的几何量值,为工作面安全生产和巷道合理支护提供科学的理论指导。同时,通过多种矿压观测手段分析了工作面开采过程中的采场来压规律及过应力集中煤柱的矿压规律,对该矿区其他相同条件工作面及类似条件下回采采场围岩控制具有工程决策意义。

Numerical Simulation Research on Mine Pressure Behavior Law of Residual Coal Pillar Through 42 Coal of 43307 Working Face

Based on the analysis of the pressure of the working face in the 43307 midng area of ujialiang coal mine, the ctanpuliog model was founded. As the working face moving ahead, the pressure behavior of the working thee was inwstigated lhrough the numerical simulatioo method and the value of the pressure distribution around the working face was given. So Ihe results of tile simulation can provide the scientific guidance for the safety mining of the working face and the optinlized support of the gateway. Meanwhile. the paper analysed the law of weighting of workitig face and tile law of overstress on coal pillar in a stress concentration which was in the process of mining working tacc through many observation metho（Is of rock pressure. It has engineering decision significance for working face of the mining area in other same couditions and the rock control of mining stope in the similar conditions.