With the increase in underground tunnel projects,shield tunneling can alter the stress state of the soil surrounding the tunnel,potentially leading to deformation or settlement.Exploring the impact of shield tunneling on the stress in the surrounding soil is of significant reference value for future research.This paper summarizes existing findings and classifies and analyzes the factors influencing changes in water and soil pressure around tunnels,as well as methods for calculating confinement pressure.The study indicates that the changes in soil pressure and pore water pressure caused by shield tunneling follow similar patterns,and the stress changes around the tunnel are influ-enced by multiple internal and external factors.Most confinement pressure calculation methods are based on empiri-cal data.There is a lack of comprehensive construction site data and large-scale model tests,and the effects of con-struction methods,surface loads,groundwater levels,and other external factors on soil stress require further investi-gation.The system for calculating confinement pressure needs to be improved.
关键词
盾构隧道/水土压力/隧道围压计算/应力变化影响因素
Key words
shield tunnels/water and earth pressure/confining pressure calculation of tunnel/influencing factors of stress change
维普
万方数据