摘要
三盘区4#层2305巷掘进期间顶板破碎、离层,导致巷道成形差、支护难度大、围岩变形严重等问题,对断层群应力区巷道顶板采取"铺设钢筋网+施工联锁锚索梁棚+液压伸缩钢棚"等联合控制措施,有效防止了顶板破碎、下沉现象。
The roof of No.2305 roadway in No.4 layer of No.3 panel was broken and separated during driving,which leads to the problems of poor formation,difficult support and serious deformation of surrounding rock.The joint control measures such as "laying of steel bars + construction of interlocking anchor cable beams + hydraulic telescopic steel shed" are adopted to effectively prevent roof breakage and subsidence.
作者
白强
Bai Qiang(Yanya Coal Industry Company,Datong Coal Mine Group,Shanxi Datong 037003)
出处
《山东煤炭科技》
2021年第1期83-84,87,共3页
Shandong Coal Science and Technology
关键词
掘进
断层
支护
优化
excavation
fault
support
optimization
