割孔注浆技术在大海则煤矿水害治理中的应用

The Practice of Cutting Hole Grouting Technique in the Water Damage Control of Dahaize Coal Mine

立井井筒冻结施工后由于种种原因,可能出现个别孔解冻后孔壁和冻结管之间的环形空间因封闭不彻底成为上下各含水层间的联系通道。当钻孔穿越装载硐室、马头门等井筒相关硐室时,这个环形空间也就成为矿井的导水通道。大海则煤矿对二号回风立井冻结孔进行割孔注浆,取得了良好的注浆效果。

For various reasons, freezing shaft lining after construction, may become the tunnel occur between the upper aquifer and the lower aquifer, due to the incomplete enclosure of annular space between the hole after thawing and freezing pipe of hole wall. This circular space also becomes the guiding water channel of the mine when the borehole passes through the tunnel chamber, such as the tunnel chamber and the horsehead door. Dahaize coal mine has made a good grouting effect on the frozen hole of No.two back air shaft.