沿空掘巷窄煤柱宽度数值模拟研究

Numerical Simulation Study on the Width of Narrow Coal Pillars in Roadway along Goaf

为研究沿空掘巷时窄煤柱的合理宽度,以元贾煤矿30107工作面沿空掘巷为研究对象,采用理论计算、数值模拟及现场监测的方法确定窄煤柱的合理宽度。结果表明:30107工作面煤柱的合理宽度为5 m时,巷道围岩变形量符合安全高效生产要求。

In order to study the reasonable width of narrow coal pillars during roadway driving along the goaf,the 30107 working face along the goaf in Yuanjia Coal Mine is taken as the research object. The theoretical calculation,numerical simulation and on-site monitoring method are used to determine the reasonableness of the narrow coal pillar. Width,research shows that when the reasonable width of the narrow coal pillar of Yuanjia Coal Mine is 5 m,the deformation of the surrounding rock of the roadway meets the requirements of safe and efficient production.