灰岩顶板切顶卸压与沿空留巷技术优化设计  

Limestone Roof top Cutting Technology for Pressure Relief and Along the Optimization Design

作　　者：王华伟 孙西征 门会理 Wang Huawei;Sun Xizheng;Men Huili(Qiuji Coal Mine of Shandong Energy New Mine Group,Dezhou,China;Jining City Energy Comprehensive Law Enforcement Detachment,Jining,China)

机构地区：[1]山东省邱集煤矿有限责任公司,山东德州 [2]济宁市能源综合执法支队,山东济宁

出　　处：《科学技术创新》2024年第15期135-138,共4页Scientific and Technological Innovation

摘　　要：根据切顶卸压沿空留巷原理,沿回采巷道采空区的一侧顶板进行切缝。当回采后,顶板在矿山压力的作用下沿着切缝自动切落,形成巷道的煤壁。这样不仅可以保持巷道的完整性又将采空区与巷道隔开,进而将自动形成的顺槽作为下一工作面的沿空巷道。但是通过现场实际操作存在不少困难,为进一步优化顺槽沿空留巷方式,研究后决定采用单元支架、锚网索、挡矸工字钢、单体支护联合支护形式替代原沿空留巷支护。According to the principle of roof cutting,pressure relief and gob retention,seam cutting is carried out along one side roof of mined-out area of mining roadway.After the stope,the roof is automatically cut off along the seam under the action of mine pressure,the coal wall that forms the roadway.This can not only maintain the integrity of the roadway but also separate the goaf from the roadway,then the automatically formed channel is used as the gob roadway of the next working face.But there are many difficulties in actual operation,in order to further optimize the way of retaining roadway along the goaf.After the study,it was decided to use the unit stent,Anchor wire rope,Coal gangue blocking I iron,single support combined support replaces original goaf retaining support.

关 键 词：切顶卸压 联合支护 沿空留巷 

分 类 号：TD353[矿业工程—矿井建设]