深基坑开挖时邻近既有地铁隧道的监测分析

ANALYSIS OF MONITOR OF ADJACENT TUNNEL IN PROCESSES OF FOUNDATION EXCAVATION

以上海某深基坑开挖工程为例,阐述控制地铁隧道沉降变形的相关设计技术措施,分析深基坑开挖时邻近地铁隧道的监测数据。基坑开挖期间,应采用自动化静力水准监测等技术,对基坑开挖全过程进行有效的实时监控,确保地铁结构和运营安全。研究监测数据,总结地铁隧道受邻近工程施工扰动变形沉降的规律,可为变形沉降机理的研究提供技术支持和理论依据。

This paper takes a deep-pit excavation project in Shanghai as an example, illustrating relevant technologies that determining the deformation and displacement of the subway tunnel. And it analyzes the influence of deep-pit excavation on nearby subway by combining the subway tunnel monitoring data together. During deep-pit excavation, the safety of subway tunnel structure are granted by effective live surveillance on the whole process, using advanced technics like automatic monitor on tunnel deformation and displacement, thus both underground structure and operational safety can be granted. By analyzing monitoring data, conclusion can be made that subway tunnel is influenced by the deformation and displacement of the nearby engineering, which provide both technical and theoretical support to the further research on mechanism of deformation and displacement.