条带断层煤柱对地表沉陷影响的三维模拟研究

3D Numerical Simulation of Influence of Fault Pillar on Surface Subsidence

根据临涣煤矿村庄下两个条带工作面留设断层煤柱、实施跳采的具体情况,采用3DEC三维离散元软件就走向留设的断层煤柱对地面沉陷的影响进行了模拟研究,结果表明:走向留设了断层煤柱将会使地面下沉量减小14.7%、倾斜降低17.1%、水平变形降低13.1%。模拟结果与实测结果对比基本吻合,3DEC软件能较好的模拟预计地表沉陷。

Based on the project of 2 fault pillars in the strip mining under the village in Linhuan Mine, the surface subsidence was simulated with 3DEC under the condition of fault pillar along strike. The result shows that fault pillar will reduce surface subsidence by 14.7%, slope by 17.1%, and hori zontal strains by 13.1%. Simulation result is basically consistent with the site measurement,and the 3DEC can well simulate the surface subsidence .