临海深大基坑项目降水减压设计及周边影响分析  

Design of Dewatering and Decompression for Littoral Deep Foundation Pit and Environmental Impact Analysis

作　　者：王得泰 张乃超 Wang Detai;Zhang Naichao(Tianjin Shenji Engineering Co.,Ltd.,Tianjin 300222,China;No.1 Engineering Company of CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300456,China)

机构地区：[1]天津深基工程有限公司,天津300222 [2]中交一航局第一工程有限公司,天津300456

出　　处：《港口航道与近海工程》2024年第6期74-78,共5页Port,Waterway and Offshore Engineering

摘　　要：通过本基坑的涌水量设计、布置基坑的降水井的数量和形式与天津港某LNG码头取水泵房基坑施工特点相结合进行分析研究,并在此研究基础上对基坑降水对周边环境影响进行探索,提出临海深大基坑工程降水减压设计及环境影响分析的可行性及必要性。验证降水的有效实施可避免基坑开挖过程中出现地下水突涌、围护墙体渗漏等现象,保证施工过程中的干燥作业环境。分析基坑开挖过程中对周边建筑物的影响情况,对基坑开挖施工进行理论指导。The design of water inflow in a foundation pit,the number and layout of dewatering wells around the foundation pit were analyzed and studied by referring to the construction characteristics of the foundation pit of water-intake pump shed in a LNG terminal project,including the impact of the foundation pit dewatering on the surrounding environment,the feasibility and necessity of dewatering&decompression design and environmental impact analysis of littoral deep foundation pit projects.To verify the effectiveness of dewatering before construction could avoid groundwater surging and water leakage of retaining walls during the excavation of foundation pit,and ensure a dry working condition.The influence on the surrounding buildings by the foundation pit excavation was analyzed,which served as a theoretical guide for the excavation of foundation pit.

关 键 词：临海深基坑 降水设计 疏干井 减压井 环境影响分析 

分 类 号：U655.4[交通运输工程—港口、海岸及近海工程]