Taking a shield well adjacent to a particular high-speed railway line as an example for case study,this paper aims at addressing the challenges of dewatering deep foundation pits adjacent to existing high-speed railway.For this purpose,hydrological testing was performed in the field to determine the permeability coefficient of soil layers in a stratified fashion,and a discussion was made on how the permeability coefficient influences the seepage line within a foundation pit during dewatering,and predict the water inflow into the pit by employing different methods.The paper started by outlining the origins of hydrogeological information essential for devising dewatering strategies for deep foundation pit.It then proceeded to the creation of hydrogeological cross-sectional diagrams for the existing high-speed railway piers,to evaluate the impact of foundation pit dewatering on the existing high-speed railway structure,to determine if they are within prescribed tolerances.The findings provide a foundation for the formulation of effective and appropriate dewatering and drainage solutions.This paper examined the challenges of dewatering in foundation pits of a real project,and the results provide insights that may be applicable as guidance for similar projects.
high-speed railwaypile foundationdeep foundation pitdewateringhydrological testing
NETL
NSTL
维普
万方数据
