摘要
15121进风巷在过F3断层带时,顶板出现破碎现象,原顶板锚杆变形、失效现象严重。通过技术研究,分析了破碎带处顶板支护存在的问题,提出了让压恒阻锚索支护方案。实际应用效果来看,该支护具有支护强度高、让压效果好、适用性强等优点,有效降低了破碎带处顶板下沉、冒落现象,取得了显著应用成效。
When 15121 air intake roadway passes through F3 fault zone,the roof is broken,and the bolt deformation and failure of the original roof are serious.Through technical research,the paper analyzes the problems existing in the roof support at the fracture zone,and puts forward the supporting scheme of yielding pressure and constant resistance anchor cable.From the practical application effect,the support has the advantages of high support strength,good yield effect and strong applicability,which effectively reduces the roof subsidence and caving phenomenon at the fracture zone,and achieves remarkable application effect.
作者
赵慧龙
Zhao Huilong(Yangquan Coal Industry Group Changgou Coal Mine Co.,Ltd.,Shanxi Jinzhong 030600)
出处
《山东煤炭科技》
2020年第9期52-53,58,共3页
Shandong Coal Science and Technology
关键词
巷道
断层
让压
恒阻
锚索
roadway
faults
yielding pressure
constant resistance
anchor cable
