基坑开挖对周边地下管线的影响研究  

Study on the influence of foundation pit excavation on surrounding underground pipelines

作　　者：郑丽娜 胡鹏飞 Zheng Lina;Hu Pengfei(School of Civil Engineering,Shangqiu Institute of Technology,Shangqiu Henan 476000,China)

机构地区：[1]商丘工学院土木工程学院,河南商丘476000

出　　处：《山西建筑》2025年第10期73-76,85,共5页Shanxi Architecture

基　　金：基于数值模拟研究基坑开挖技术对周边设施的影响(项目编号:2022KYXM08)。

摘　　要：城市化进程中,深基坑工程对周边地下管线的影响显著。以古树苑站基坑开挖为背景,利用MIDAS GTS NX软件进行数值模拟,分析基坑开挖对地下管线的影响机理。研究发现,地下管线变形与基坑开挖深度、距离及埋深密切相关。随着开挖深度增加,管线位移显著增大,主要集中在管线中部;距离基坑越近,变形越大,超过18 m时影响减弱;埋深越浅,变形越大。据此,对近距、浅埋管线采取改道或就地保护措施,以确保管线正常运行,为基坑工程中地下管线保护提供理论与实践指导。In the process of urbanization,deep foundation pit engineering has a significant impact on the surrounding underground pipelines.Taking Gushuyuan Station excavation as background,MIDAS GTS NX software is used for numerical simulation to analyze the influence mechanism of excavation on underground pipeline.It is found that the deformation of underground pipeline is closely related to the excavation depth,distance and buried depth of foundation pit.With the increase of excavation depth,pipeline displacement increases significantly,mainly in the middle of the pipeline.The closer the foundation pit is,the larger the deformation is,and the influence weakens when the foundation pit is more than 18 meters.The shallower the burial depth,the greater the deformation.Therefore,it is suggested that the short-distance and shallow buried pipelines should be diverted or protected in place to ensure the safety and normal operation,and provide theoretical and practical guidance for the protection of underground pipelines in foundation pit engineering.

关 键 词：基坑开挖 地下管线 数值模拟 管线变形 

分 类 号：TU473.2[建筑科学—结构工程]