茂华万通源煤矿辅助巷道煤柱留设技术研究

Study on Coal Pillar Retaining Scheme of Auxiliary Roadway in MaohuaWantongyuan Coal Mine

针对山西茂华万通源煤矿401采区辅助回风巷与40103工作面运输巷之间煤柱、辅助回风巷与机轨合一巷之间煤柱尺寸留设尺寸不合理问题,通过理论分析,用综合极限平衡计算法和载荷估算法确定合理煤柱的宽度,且运用FLACK3D证明了计算煤柱尺寸是正确的。

In view of the unreasonable size of coal pillar between auxiliary return air roadway and 40103 working face transpor-tation roadway,between auxiliary return air roadway and machine rail combined roadway in 401 mining area of Maohua Wantongyu-an Coal Mine,through theoretical analysis,the reasonable width of coal pillar is determined by comprehensive limit equilibrium cal-culation method and load estimation method.With the help of numerical software FLACK 3D,the rationality of the size of coal pil-lar left is verified.