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。
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.
作者
刘冲
LIU Chong(Shanxi Coal Construction Management Co.,Ltd.,Taiyuan 030012,Shanxi,China)
出处
《能源与节能》
2022年第4期104-106,共3页
Energy and Energy Conservation
关键词
破碎带
地面定向钻孔
L形钻孔
注浆加固
fault fracture zone
ground directional drilling
L-shaped borehole
grouting reinforcement
作者简介
刘冲,1987年生,男,山西太原人,2016年毕业于太原理工大学采矿工程专业,工程师。
