隧道风井开挖施工阶段的长期变形监测研究

Study on Long-term Deformation Monitoring of Tunnel Air Shaft during Excavation

为了保证邻近建筑结构的安全,对地铁隧道深基坑施工阶段进行监测是十分必要的。介绍了某地铁隧道通风井在深基坑施工过程中的沉降监测系统,对风井开挖施工现场地表和深度方向监测的长期沉降数据进行了详细的分析。结果表明,不同施工阶段施工点的沉降在允许的变化范围内稳定变化。

In order to ensure the safety of adjacent buildings,it is necessary to monitor the construction stage of deep foundation pit of subway tunnel.This paper introduces the instrument system of settlement monitoring in the process of deep foundation pit construction of a subway tunnel ventilation shaft.This paper analyzes the long-term settlement data of surface and depth monitoring in the construction site of air shaft excavation.The results show that the settlement of construction points in different construction stages is stable within the allowable range.