施工中遇到地下水位高,为了保证基础土方开挖,我们经常采用简易井点降水。即钻孔、下笼、抽水的办法来降低地下水位。1979年我们承担某工程,不仅地下水位高(在自然地坪下1.50米左右),而且地下有较厚的流砂层,最厚的部位达3.2米。采用简易井点降水的办法没有成功。为此,我们学 High groundwater levels are encountered during construction. In order to ensure basic earthwork excavation, we often use simple well-point precipitation. That is, drill holes, cages, and pumping methods to reduce groundwater levels. In 1979 we took on a project that not only had a high groundwater level (about 1.50 meters below the natural floor), but also a thicker layer of flowing sand beneath the ground, with the thickest part reaching 3.2 meters. The use of simple well-point precipitation has not been successful. To this end, we learn