马丽散加固技术在特近层间距掘进煤巷的应用  

Application of Marisan reinforcement technology in driving coal roadway with super close interval

作　　者：余国栋 吕晓明 YU Guo-dong;LYU Xiao-ming(Daliuta Coal Mine,Shendong Coal Group Co.,Ltd.,Shenmu 719315,China)

机构地区：[1]神东煤炭集团大柳塔煤矿,陕西神木719315

出　　处：《陕西煤炭》2020年第S02期140-143,共4页Shaanxi Coal

摘　　要：大柳塔煤矿活鸡兔井12下203切眼是在采空区下方4 m特近层间距掘进大断面切眼,为了确保切眼顶板的完整性,采用顶板注马丽散加固围岩来提高顶板围岩稳定性的方法,确保施工期间的安全。通过介绍先注后掘、两次成巷、顶板注射钻孔布置、扩帮段注射孔布置、封孔、施工组织等施工设计和相应的施工工艺,提出了安全注意事项,保证了掘进工作的顺利进行。In Huojitu mine of Daliuta coal mine,12-203 open-off cut is a large section roadway with super close interval,which is 4 m below the goaf.In order to ensure the integrity of the roof of the open-off cut,the method of strengthening the surrounding rock by injecting Marisan into the roof was adopted to improve the stability of the surrounding rock and ensure the safety during the excavation.The paper introduces the construction design and the corresponding construction technology,such as injection before excavation,twice tunneling,injection drilling layout,borehole sealing,construction organization,etc.,and puts forward safety precautions to ensure the smooth progress of the excavation work.

关 键 词：切眼掘进工作面 马丽散 加固 

分 类 号：TD263[矿业工程—矿井建设]