摘要
21517巷在掘进期间受构造应力影响,掘进至860 m处顶板出现破碎、下沉,通过研究、分析,对原支护进行优化,提出了加长注浆锚杆支护方案,顶板下沉量由原来的0.37 m降低为0.21 m,提高了顶板整体稳定性,取得了显著应用成效。
Due to the influence of tectonic stress during driving,the roof of the 21517 roadway was broken and sunk at 860 m.Through research and analysis,the original support was optimized,and the extended grouting bolt support was put forward.The roof subsidence is reduced from 0.37 m to 0.21 m,the overall stability of the roof has been improved,and remarkable application results have been achieved.
作者
周利峰
Zhou Lifeng(Jinneng Holding Coal Industry Group Hulonggou Coal Mine,Shanxi Shuozhou 038300)
出处
《山东煤炭科技》
2021年第11期92-93,97,104,共4页
Shandong Coal Science and Technology
关键词
掘进
应力区
支护
优化
driving
stress zone
support
optimization
