Table. 2.

The basic mechanical properties of the surrounding rock of large ancient underground cavern group of Longyou


Water status Elastic modulus E/MPa Poisson’s ratio µ Uniaxial compressive strength / MPa Softening coefficient / % Cohesive force c/MPa Frictional angle ϕ/(o) Tensile strength σt/MPa
Air drying 4500 0.266 31.61 57.36 1.63
Saturated water 3030 0.269 18.13 5.6 26

Episodes 2019;42:287~299 https://doi.org/10.18814/epiiugs/2019/019023
© International Union of Geological Sciences