Abstract:When building the large-depth pipe-jacking well in complex environments, in order to reduce the impact on the environment, the traditional open caisson process is rarely used, but SMW construction well, cast-in-place pile well, underground diaphragm wall and other processes are used. Although the environmental impact of the foundation pit well is small on the environment, the construction machinery is large, the conditions into site are demanding, the construction period is long, and the impact on the residents around the construction site is greater. In order to reduce the disturbance of the pipe-jacking well to the environment and shorten the impact time on the surrounding residents, the press-in micro-disturbance thin-wall steel open caisson is innovatively proposed. The large-diameter steel pipe is used as the pipe-jacking receiving well to replace the traditional deep foundation pit excavation and rebuilding process, which shortens the construction period and reduces the land occupation. The bridges, roads and houses around the pipe-jacking well are monitored during the construction process. The whole construction process has the minimal impact on the surrounding environment, which can be used as a reference for the application of steel open caisson in pipe jacking projects.