厚煤层大采高采场上覆岩层运移规律数值模拟研究

Numerical Simulation on Movement of Overlying Strata in Large-mining-height Thick Coal Seam Mining

基于斜沟煤矿18105大采高工作面采场的煤岩赋存条件与开采条件,建立FLAC3D数值计算模型,随着工作面不断推进,研究厚煤层中大采高采场中上覆岩层运移规律,模拟分析大采高采场覆岩的应力分布、位移情况以及大采高工作面推进过程中采场围岩应力场、位移场和围岩破坏情况。研究结果可为厚煤层大采高采场围岩控制提供理论依据和工程参考。

Based on the occurrence and mining condition of coal rock in No. 18105 large-miningheight working face in Xiegou Mine, numerical simulation model of FLAC3D was established. With the advancing of the working face, the movement of overlying strata was studied. We simulated the stress distribution, displacement, and stress field, displacement field, and surrounding rock failure. The results could provide theoretical rationale and engineering reference for the surrounding rock control in thick coal seam with large-mining-height mining.