摘要
超大型基坑降水由于基坑开挖面积大,降深大,基坑涌水量大等因素,在周围没有其它重要建筑物前提下,一般选择井点降水即管井降水方法使地下水位达到降水要求。此类降水工程的难点在于如何设置降水管井及如何保证所施工的管井达到设计出水能力,包括降水管井的井径、深度、间距、施工工艺等方面内容。该文结合首钢某超大基坑降水工程设计与施工实例对上述问题进行了分析和探讨。
Because of big excavation area,deep drawdown,large hydraulic discharge etc.of very large foundation pit dewatering,well point dewatering（tube well dewatering） is often chosen to reach the dewatering requirements without other important buildings surrounding.The difficulties of dewatering engineering are how to set tube well and to guarantee the construction tube well reach the design water capacity,including tube well diameter,depth,spacing,construction technology and so on.The design and construction examples of very large foundation pit dewatering engineering in Shoudu Steel Group are analyzed and discussed.
出处
《勘察科学技术》
2010年第5期39-43,共5页
Site Investigation Science and Technology
关键词
超大型基坑
抽水试验
水文地质参数
施工工艺
very large foundation pit
pumping test
hydrogeological parameters
construction technology
