沿空掘巷不同煤柱宽度巷道围岩稳定性数值模拟

Numerical Simulation of Surrounding Rock Stability of Different Pillar Widths for Driving Roadway along Goaf

沿空掘巷能够提高煤炭采出率和经济效益,在全国范围内被广泛应用。通过Phase2对不同煤柱宽度的沿空掘巷巷道围岩稳定性进行数值模拟,分析总结了随煤柱宽度增加巷道围岩的应力分布规律及巷道围岩位移发展规律,确定合适的煤柱宽度为5-10 m。结果表明,Phase2能够有效地进行沿空掘巷数值模拟计算,可为实际生产提供理论依据。

Driving roadway along goaf can improve the rate of coal and economic benefits,so it is widely used in the country. Make the numerical simulation for the hollow digging roadway rock of diffierent coal pillars by Phase2,analyze and summarize the stress distribution law and the roadway surrounding rock displacement development law with the increasing of the coal pillar width,determine the appropriate coal pillar width,which is 5-10 m. The results show that Phase2 can make effectively simulation calculation about the driving roadway along goaf,and can provide the theoretical basis for the actual production.