Abstract: The gradual accumulation of water in the closed stope under the mine will reach a certain level,and it will destroy the bottom pillar,blocked pedestrians,and slip the mine at the local weak parts of the stope,and will be used to carry the tailing sand of the stope into the mine ore.If it is not plugged or the plugging strength does not meet the requirements,a water penetration accident will occur.In this regard,in order to reduce the adverse impact of the retaining wall unable to block the flood,based on the actual project,the design of the blocking retaining wall was carried out according to the supporting form,strength theory calculation,FLAC3D software simulation and other conditions,and the arc retaining wall was determined to be used.The thickness value of the filling retaining wall is 0.6 m,the strength of the key force parts is increased,and the instantaneous strength is increased.The round steel is arranged around the retaining wall in the direction of the arc tangent to maximize the compressive strength of the round steel.After application,it is shown that the blocking effect is obvious,which verifies the rationality of the design.

Key words: permeable,high stress retaining wall,FLAC3D simulation