土工基础 ›› 2024, Vol. 38 ›› Issue (3): 432-436.

• 工程实录 • 上一篇    下一篇

海外临江高渗透强补给围堰基坑降水实践

郭生强   

  1. (中交四航局第二工程有限公司,广州 510000)
  • 收稿日期:2023-12-04 修回日期:2023-12-29 出版日期:2024-06-30 发布日期:2024-09-16
  • 作者简介:郭生强(1984-),男,中级工程师,研究方向为港口航道与海岸工程施工。
  • 基金资助:
    上海市科学技术委员会(22DZ1202900)

Practice of Dewatering for a Riverside Cofferdam with High Permeability and Strong Recharge in Overseas

GUO Shengqiang   

  1. (CCCC Fourth Harbor Engineering 2nd Co. Ltd., Guangzhou 510000)
  • Received:2023-12-04 Revised:2023-12-29 Online:2024-06-30 Published:2024-09-16

摘要: 随着国内企业广泛参与“一带一路”建设,国内企业在海外需要面临新标准、新环境,因此需要针对当地情况因地制宜选用合适的工程设计、施工及管理方法。海外临江临海基坑工程由于地层渗透系数大、水量补给丰富、止水帷幕施工困难等原因,基坑降水难度极高,基坑降水的成功与否影响项目的工期和造价。依托某海外临江高渗透性地层的基坑降水项目,介绍基坑降水工程水文地质勘察、设计、施工过程中出现的问题,总结大水量、强补给、强腐蚀地下水基坑项目经验,提出了针对性的解决措施,为类似项目建设与实施提供了参考。

关键词: 临江基坑, 降水, 一带一路

Abstract: With the extensive increasing involvement of domestic enterprises in the construction of “the Belt and Road Initiative” projects, domestic enterprises need to face new standards and new environments overseas. Consequently, they need to select appropriate engineering design, construction and management methods that are tailored to local conditions. Due to the high permeability of soil strata, abundant groundwater recharge, and difficulties in local groundwater slurry wall construction, an overseas riverside and seaside pit project encounters an extremely large challenge in dewatering inside the foundation pit. The success or failure of dewatering the excavated area affects the project schedule and cost. This article discusses a deep excavation dewatering project to introduce the problems encountered in the hydrogeological investigation, design, and construction process of the deep excavation dewatering engineering. The experiences gained from projects involving large groundwater volume, strong recharge, and intense corrosion groundwater challenges, and puts forth specific solutions. The objective is to serve as a reference for the construction of similar projects.

Key words: Riverside Deep Excavation, Dewatering Project, the Belt and Road Initiative

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