多管降水法在电力线路工程基坑降水过程中的研究应用

Study and Application of Multi-tube Precipitation Method in the Precipitation Process of Excavation Pit of the Power Line Project

以往榆林沙漠地区基坑降水采用先开挖后降水,容易出现基坑边坡塌方,降水难度大,费工费时,降水效果差,本工程基坑降水采用了多管降水法,从管井的沉设方法,PPR新材料的运用,井管的制作等方面,开发研究出小范围内基坑降水的新方法,降水效果好,可在具有相同水文地质条件的工程降水中应用。

For Yulin desert area,the precipitation of the foundation pit is excavation firstly,which causes prone to landslide of the pit slope.The precipitation method is difficult,labor-and time-consuming,poor rainfall.The engineering foundation pit with a multi-tube precipitation method,from the sink tube wells design method,PPR use of new materials,its manufacture etc.,developed a new method for a small range of foundation pit,the precipitation effect is good and can be use to rainfall for the other projects which have the same hydrological and geological conditions.