双液灌浆法在临时围堰止水帷幕中的应用

Application of Double-fluid Grouting in Water-proof Curtain of Temporary Cofferdam

双液灌浆法是静压灌浆法的一种,通过水泥浆和速凝剂在地层孔隙和裂隙中的快速凝结,增加了地基土的不透水性,从而防止流砂、渗水等不利现象的出现。在大连取水泵房工程止水帷幕中漏浆严重部位采用该方法后,取得了较好的防渗防漏效果,为下一步的旋喷灌浆改善了施工条件。

The double-fluid grouting is a type of the static pressure grouting.By the fast setting of the cement slurry and the accelerating agent in the formation pore and crack,the water-permeable proof of foundation soil is increased and the disadvantageous of sand flow and seepage are controlled.The double-fluid grouting was applied in the serious leakage part of water-proof curtain project in a pump room in Dalian with good effect of anti-seepage and waterproofing.