综采工作面切顶卸压沿空成巷开采技术探讨  

Discussion on Mining Technology of Roof Cutting Pressure Release of Roadway Excavation along Goaf for Fully Mechanized Mining Face

作　　者：马智宇 Ma Zhiyu(Safety Management Dept.of Jinneng Holding Coal Industry Group,Datong,Shanxi 037003)

机构地区：[1]晋能控股煤业集团安全管理部,山西大同037003

出　　处：《江西煤炭科技》2022年第2期10-11,14,共3页Jiangxi Coal Science & Technology

摘　　要：为消除晋能控股煤业集团王村煤业8120工作面坚硬顶板条件下综采面沿空成巷“弧形三角顶板”威胁,拟应用切顶卸压、沿空成巷和“前进支护+定向爆破+挡矸支护”技术;经实践,留巷顶板的平均下沉量降低88.3%、两帮的平均移近量降低76.4%;确保了留巷的基本稳定。In order to eliminate the threat of"curved triangular roof"in roadway excavation along goaf of fully mechanized mining face with condition of hard roof at 8120 working face of Wangcun Coal Industry,Jinneng Holding Coal Industry Group,the author proposes the supporting technology of roof cutting pressure release,roadway excavation along goaf and"advance support,directional blasting and reinforcement support",which reduces the average subsidence of the entry roof by 88.3%,the average moving amount of the two banks by 76.4%and ensures the basic stability of the entry retention.

关 键 词：无煤柱开采 坚硬顶板 切顶卸压 沿空成巷 定向爆破 

分 类 号：TD823.48[矿业工程—煤矿开采]