支护压力控制下隧道周围砂土变形破坏物质点法模拟
张春新,朱鸿鹄,李豪杰,张巍,刘春

Material point method simulations of sand deformation and failure around tunnel controlled by support pressure
Chun-xin ZHANG,Hong-hu ZHU,Hao-jie LI,Wei ZHANG,Chun LIU
表 2 不同内摩擦角的极限支护压力
Tab.2 Ultimate support pressures for soils with different friction angles
φ/(°) σTL/kPa λ
15 129 0.55
25 66 0.77
35 43 0.85