倾斜中厚煤层窄煤柱沿空掘巷支护技术研究  

Study on supporting technology of narrow coal pillar driving roadway along goaf in inclined middle thick seam

作　　者：刘延超 LIU Yanchao(Yunnan Energy Investment Weixin Coal Co. ,Ltd. ,Yunnan Zhaotong 657900)

机构地区：[1]云南能投威信煤炭有限公司,云南昭通657900

出　　处：《煤矿现代化》2019年第4期7-9,共3页Coal Mine Modernization

摘　　要：本文以7121工作面倾斜中厚煤层5m窄煤柱沿空掘巷为工程背景,采用FLAC3D数值模拟软件对沿空掘巷后围岩的应力及位移分布规律进行研究,进而提出了采用高强锚杆+锚索+金属网+托盘的耦合支护体系来控制巷道围岩变形。工业性试验结果表明,巷道顶底板移近量580mm,两帮移近量为992mm,围岩变形处于可控范围,实现了工作面的安全高效回采。In this paper, 7121 inclined middle-thick coal seam with 5 m narrow pillar driving along the Goaf for engineering background, by using the FLAC3 D numerical simulation software to study the stress and displacement distribution law of the surrounding rock along the Goaf,and then put forward the coupling support system of HIGH-STRENGTH anchor Rod + anchor Rope + Metal Net + pallet to control the deformation of roadway surrounding rock. The industrial test results show that the top and bottom of the roadway are 580 mm, the displacement of the two is 992 mm, the surrounding rock deformation is in controllable range, and the safe and efficient mining is realized.

关 键 词：倾斜 中厚煤层 窄煤柱 沿空掘巷 耦合支护 

分 类 号：TD353[矿业工程—矿井建设]