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In this paper one underground storage cavern’s stability is studied, on the condition of high-piled-slag right over the tunnels. The finite element software ANSYS is used as a tool solving the overlying loads’s effects to underground rock mass. The calculation results show that, due to the reason that surrounding rock is slightly weathered hard granite and self stabilization ability is strong, the overlying load on the maximum combined stress value of tunnel effect is small. Keywords-Slag heap height; Underground cavern; Rock stability; Underground stress ; FEM.

Effects of High Slag Accumulation on the Stability of Underground Tunnels