同忻矿3-5^(#)煤层小煤柱开采技术及实施效果研究

Technology and Implementation Effect of Small Coal Pillar Mining in 3-5^(#)Coal Seam of Tongxin Coal Mine

以同忻矿8311工作面为案例进行小煤柱开采技术实践研究。对8311小煤柱工作面矿压显现控制技术方案进行了研究,对小煤柱开采技术和大煤柱开采技术的矿压显现进行了对比分析。结果表明,8311工作面采用小煤柱开采技术在临空巷矿压治理、资源回收率提升等方面具有较好的效果,有效控制了临空巷围岩变形,减少了冒顶、片帮等矿压事故的发生,具有较好的安全经济效益。

Taking the 8311 working face of Tongxin Coal Mine as a study case,practical research on small coal pillar mining technology was conducted.A study was conducted on the control technology scheme of rock pressure manifestation in the 8311 small coal pillar working face,and a comparative analysis was conducted on the rock pressure manifestation of small coal pillar mining technology and large coal pillar mining technology.The results show that the application of small coal pillar mining technology in the 8311 working face has achieved good results in the treatment of mining pressure in goaf tunnels and the improvement of resource recovery rate.It effectively controls the deformation of surrounding rock in goaf tunnels,reduces the occurrence of mining pressure accidents such as roof fall and slope fragmentation,and has good safety and economic benefits.