Study on the influence of foundation pit excavation on the adjacent large-diameter fully prefabricated tunnel

Abstract

The influence of foundation pit excavation on the adjacent large-diameter fully prefabricated tunnel was studied. Through the analysis of the interaction between foundation pit excavation and tunnel structure, the effects of vibration, settlement and deformation of tunnel structure that may be caused by foundation pit excavation are discussed, and relevant risk control and mitigation measures are proposed. Based on the research method of theoretical analysis, numerical simulation and field measurement, this paper identifies the possible adverse effects and potential risks of foundation pit excavation on the existing large-diameter fully prefabricated tunnels, and provides important guidance for the risk management of related projects.

Keywords

foundation pit excavation / large-diameter fully prefabricated tunnel / proximity impact / risk control