地铁施工中深基坑涌水分析和处理措施研究

Analysis and treatment of water gushing in deep foundation pit

结合北京某在施地铁基坑涌水问题分析与处理实例,讲述了在地下结构设计与施工过程中,预防基坑涌水问题的有效措施及发生涌水时的处理办法。针对基坑涌水问题发生的原因,从地下结构建设的不同角度进行分析,明确处理原则应以“疏导为主,封堵为辅”,采取内堵外排的解决方案,并根据涌水问题的严重程度,提出不同程度下的及时、有效处理措施。

Combined with the analysis and treatment of the water gushing problem in the foundation pit of an underground project in Beijing, this paper describes the effective measures to prevent the water gushing problem in the foundation pit during the design and construction of the underground structure and the treatment methods when the water gushing occurs. According to the causes of water gushing in foundation pit, this paper analyzes from different angles of underground structure construction, and puts forward timely and effective treatment measures in different degrees according to the severity of water gushing. The treatment principle of water gushing in foundation pit should be“dredging first, plugging second”, and the solution of internal plugging and external drainage should be adopted.