工作面预注浆在漳村西扩区回风井中的应用

漳村煤矿西扩区回风立井是一新建工程 ,井筒穿七层含水层 ,总涌水量达到 32 0 6 1t/h ,施工过程中 ,采用工作面预注浆 ,顺利解决了涌水问题 ,井筒提前到底 ,取得了良好的社会和经济效益

Application on Pre-grouting in Workface of Air Return Vertical Shaft of the West expanding area

Air return vertical shaft of the west expanding area is a newly built engineering in Zhangcun coal mine,vertical shaft collar passes through seven water layers,total water volume reaches 320.61 t/h,this paper introduces pre-grouting in workface in course of construction,it solves water bursting problem,vertical shaft collar finishes before the due date,and gains good social effect and economic returns.