Project(2013CB036004)supported by the National Basic Research Program of China;Project(51378510)supported by the National Natural Science Foundation of China
Collapse shape of tunnel floor in Hoek-Brown rock media is investigated with the functional catastrophe theory. The stability of rock system in tunnel floor, which is determined by thickness, half collapse width, half...
Project(2013CB036004)supported by National Basic Research Program of China;Projects(51178468,51378510)supported by National Natural Science Foundation of China;Project(CX2013B077)supported by Hunan Provincial Innovation Foundation for Postgraduate,China
The nonlinear Hoek-Brown failure criterion was introduced to limit analysis by applying the tangent method. Based on the failure mechanism of double-logarithmic spiral curves on the face of deep rock tunnels, the anal...
Project(2013CB036004)supported by the National Basic Research Program of China;Projects(51178468,51378510)supported by National Natural Science Foundation of China
The analytical solutions for predicting the exact shape of collapse mechanisms in shallow tunnels with arbitrary excavation profiles were obtained by virtue of the upper bound theorem of limit analysis and variation p...