箱型帷幕注浆在三明市污水处理厂5#泵站基坑支护中的应用

Application of Basket-type Curtain Injection on the Support for Foundation Ditch in the Construction of the No.5 Pump House of the Sanming Municipal Waste-water Plant

三明市污水处理厂2期工程5#泵站座落沙溪河畔,基坑低于沙溪河正常水位3.90m,基坑岩土层为杂填土和砂,为确保基坑施工安全,设计采用箱型帷幕注浆以达到隔水和加固的目的,经施工取得了满意的效果。

The No. 5 pump house of Sanming munieipal Waste-water Plant will be built in the waterside of the Shaxi Brook and the loeation of the building foundation diteh is below 3.9 meters of the normal water level. The roek and soil layers of foundation ditehes are made up of miseellaneous fill and sand. In order to ensure the building pit eonstruetion, the teehnique of the basket-type eurtain injection is used in the eonstruetion of foundation ditehes to bring about a waterproof barrier and reinforcement, which has attained the better results. The paper foeuses on the diseussion of the teehnique of building the pit eonstruetion.