基坑开挖施工监控对临近地铁隧道影响分析

Analysis on Effect of Deep-Pit Excavation and Monitoring on Neighboring Metro Tunnel in Soft Ground

本文以上海某深大基坑开挖工程为例,详尽阐述了其控制地铁隧道变形的相关技术措施和地铁监护管理经验。同时结合隧道变形监测数据,就基坑开挖对临近地铁隧道的影响进行了分析。通过采用远程监控系统、隧道内沉降位移自动化监测等手段,以及采取严格的地铁隧道变形保护措施,对基坑开挖施工全过程进行了有效的监控。在基坑开挖期间,隧道结构的沉降变形控制在安全范围,确保了地铁结构及运营安全。相关研究成果可供地铁监护借鉴、参考。

Based on an example for Shanghai deep-pit excavation,this paper elaborates the technical measures to control tunnel structure deformation and monitoring management experience.By the tunnel deformation monitoring data,the effect of deep-pit excavation adjacent to metro tunnel is analyzed.Through remote monitoring systems and automated monitoring of the tunnel to measure displacement of the settlement,and taking strict measures to protect metro tunnel deformation,the whole process of excavation is effectively monitored and controlled.During the excavation,the settlement deformation of tunnel＇s structure is controlled with in a safe range,and to ensure the safety of tunnel and its operation.So it has reference value to the metro tunnel monitoring.