深基坑降水技术浅析
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摘要
以某地铁深基坑工程为例,结合结构设计和工程地质条件等方面详细介绍了在南京河西软土地区如何进行深基坑降水方案的设计、风险评估及施工。工程针对该地区砂层中含淤泥质黏性土的地质状况,运用明排、轻型井点降水和管井相结合的方法,取得了较好的效果;同时就不同降水方法相结合时需要注意的问题、降水井的构造、降水的效果以及对周边环境的影响进行研究,能对类似工程提供参考。
The design,risk assessment and construction of some subway's deep foundation pit dewatering program are discussed,together with the structure design of foundation pit and geological conditions in soft clay ground of Hexi,Nanjing.Considering the geological condition as clay with sand layer mixed in mucky soil,we use a mixed dewatering method composed of open drainage method,well-points method and tube-well method in draining the groundwater of this project and it turns out a success.Some matters needed attention in mixed dewater method,the structure of dewater well and the influence on surrounding environment are discussed and these can do a little help to similar projects.
The design,risk assessment and construction of some subway's deep foundation pit dewatering program are discussed,together with the structure design of foundation pit and geological conditions in soft clay ground of Hexi,Nanjing.Considering the geological condition as clay with sand layer mixed in mucky soil,we use a mixed dewatering method composed of open drainage method,well-points method and tube-well method in draining the groundwater of this project and it turns out a success.Some matters needed attention in mixed dewater method,the structure of dewater well and the influence on surrounding environment are discussed and these can do a little help to similar projects.
引文
[1]夏才初,李永盛.地下工程测试理论与监测技术[M].上海:同济大学出版社,2000.(XIA Cai-chu,LI Yong-sheng.Theory of underground engineering and monitoring technology[M].Shanghai:Tongji University Press,2000.(in Chinese))
[2]赵志缙,应惠清.简明深基坑工程设计施工手册[M].北京:中国建筑工业出版社,1999.(ZHAO Zhi-jing,YING Hui-qing.Concise design of deep foundation pit engineering construction manual[M].Beijing:China Architecture&Building Press,1999.(in Chinese))
[4]张永波,孙新忠.基坑降水工程[M].北京:地震出版社,2000.(ZHANG Yong-bo,SUN Xin-zhong.The Precipitation of foundation pit engineering[M].Beijing:Earthquake Press,2000.(in Chinese))
[5]付志华.深井井点降水在管沟开挖中的设计与应用[J].山西建筑,2006,32(3):122-123.(FU Zhi-hua.Design of deep well point precipitation in pipe canal digging and its application[J].Shanxi Architecture,2006,32(3):122-123.(in Chinese))
[6]俞建霖,龚晓南.深基坑工程的空间性状分析[J].岩土工程学报,1999,21(1):21-25(YU Jian-ling,GONG Xiao-nan.Spatial behavior analysis of deep excavation[J].Chinese Journal of Geotechnical Engineering,1999,21(l):21-25.(in Chinese))
[2]赵志缙,应惠清.简明深基坑工程设计施工手册[M].北京:中国建筑工业出版社,1999.(ZHAO Zhi-jing,YING Hui-qing.Concise design of deep foundation pit engineering construction manual[M].Beijing:China Architecture&Building Press,1999.(in Chinese))
[4]张永波,孙新忠.基坑降水工程[M].北京:地震出版社,2000.(ZHANG Yong-bo,SUN Xin-zhong.The Precipitation of foundation pit engineering[M].Beijing:Earthquake Press,2000.(in Chinese))
[5]付志华.深井井点降水在管沟开挖中的设计与应用[J].山西建筑,2006,32(3):122-123.(FU Zhi-hua.Design of deep well point precipitation in pipe canal digging and its application[J].Shanxi Architecture,2006,32(3):122-123.(in Chinese))
[6]俞建霖,龚晓南.深基坑工程的空间性状分析[J].岩土工程学报,1999,21(1):21-25(YU Jian-ling,GONG Xiao-nan.Spatial behavior analysis of deep excavation[J].Chinese Journal of Geotechnical Engineering,1999,21(l):21-25.(in Chinese))
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