厚顶煤夹矸顶板下巷道复合支护技术研究  

Composite support technology of roadway under thick top coal and dirt band roof

作　　者：秦志宏 程详[2,3,4] 孟祥瑞 赵光明[1,2] 纪宝柱[5] QIN Zhi-hong;CHENG Xiang;MENG Xiang-rui;ZHAO Guang-ming;JI Bao-zhu(School of Mining Engineering,Anhui University of Science and Technology,Huainan 232001,China;State Key Laboraton-of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Science and Technology,Huainan 232001,China;Geological Resources and Geological Engineering Post-Doctoral Flow Station,Anhui University of Science and Technology,Huainan 232001,China;Post-Doctoral Research Station,Huaibei Mining Corporation Limited,Huaibei 235000,China;Xinhu Coal Mine,Anhui Bozhou Coal Industry Co.,Ltd.,Bozhou 233600,China)

机构地区：[1]安徽理工大学矿业工程学院,安徽淮南232001 [2]安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001 [3]安徽理工大学地质资源与地质工程博士后流动站,安徽淮南232001 [4]淮北矿业股份有限公司博士后科研工作站,安徽淮北235000 [5]安徽亳州煤业有限公司信湖煤矿,安徽亳州233600

出　　处：《煤炭工程》2022年第2期49-54,共6页Coal Engineering

基　　金：国家自然科学基金项目(52004005,51774012,51974009);安徽省自然科学基金(2008085QE222);安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室自主课题(No.SKLMRDPC19ZZ012);安徽理工大学引进人才科研启动基金项目;安徽理工大学校级重点项(QN2019113);安徽省重点研发与开发计划项目(201904a07020010);安徽省“特支计划”领军人才项目;安徽高校科研平台创新团队建设项目;安徽省学术和技术带头人科研活动经费项目(2018D187)。

摘　　要：针对厚顶煤夹矸顶板传统支护方案下巷道围岩变形量大,垮落威胁严重的问题,以信湖煤矿81采区818工作面运输巷为研究对象,采用理论分析、FLAC^(3D)数值模拟方法,对原始支护参数进行优化研究,提出了厚顶煤夹矸顶板下"三心拱U型钢棚+锚索梁+锁腿梁"复合支护技术,解决了巷道支护的难题。井下试验和现场实测结果表明:复合支护后,巷道围岩应力状态明显改善,顶板下沉量控制在50mm,锚索稳定支护载荷332kN,为其破断载荷的56.9%,可以对巷道起到良好的支护作用,满足矿井安全高效生产的需求。Aiming at the large deformation of roadway surrounding rock serious threat of collapsing under the traditional support scheme of thick-top coal and dirt band roof,we take the 818 transportation entry in 81 mining area of Xinhu Coal Mine as research object,and optimize the original support parameters using theoretical analysis and FLAC^(3D)numerical simulation. The “three-center arch U-shaped steel shed+anchor cable beam+lock leg beam” composite support technology under the thick top coal and dirt band roof is proposed,which solves the roadway support problem in Xinhu Coal Mine. The results of underground tests and field measurements show that the stress state of the surrounding rock of the roadway is significantly improved with the composite support,the roof subsidence is controlled around 50 mm,and the anchor cable stable support load is 332 kN,which is 56. 9% of its breaking load. The supporting effect is favorable which meets the needs of safe and efficient production in the mine.

关 键 词：厚顶煤巷道 复合支护 三心拱 U型钢棚 索梁 支护优化 

分 类 号：TD353[矿业工程—矿井建设]