大断面切眼过断面地面定向钻孔注浆加固技术研究
刘冲
（山西省煤炭建设监理有限公司，山西 太原 030012）
摘要： 煤矿井下断层等地质构造易造成巷道顶板破碎，从而引发片帮、漏顶等安全事故。以西曲矿28310 工作面为
例，应用地面定向钻孔预注浆技术，对断层破碎带进行超前注浆加固。施工效果表明，注浆加固施工后可使破碎顶板重
新固化改性，有效提高围岩强度和整体性，保障工作面顺利通过断层。
关键词： 破碎带；地面定向钻孔；L形钻孔；注浆加固
中图分类号： TD74     文献标识码： A     文章编号： 2095-0802-(2022)04-0104-03
Ground Directional Drilling and Grouting Reinforcement Technology for Large Section Cut
through Section
LIU Chong
(Shanxi Coal Construction Management Co., Ltd., Taiyuan 030012, Shanxi, China)
Abstract: Underground faults and other geological structures in coal mines are easy to cause roadway roof breakage, resulting in
safety accidents such as wall breaking and roof leakage. Taking 28310 working face of Xiqu Mine as an example, the ground
directional drilling and pre-grouting technology was applied to strengthen the fault fracture zone. The construction effect showed
that after the grouting reinforcement construction, the broken roof can be solidified and modified again, the strength and integrity
of surrounding rock can be effectively improved, and the working face can pass through the fault smoothly.

 Key words: fault fracture zone; ground directional drilling; L-shaped borehole; grouting reinforcement