Abstract: To ensure through the sign K6 sandstone aquifer of Yongxia mine security and efficient, in construction the Main Shaft -565m~-705m bedrock segment of Shunhe Mine , we applyed face large section Pre-Grouting for water-blocking ,in the end ,the hole water inflow reduced to 1.01m3/h or less, achieved remarkable results, create favorable conditions for driving and masonry shaft , wellbore to be safe and smooth off the bottom.