Numerical Simulation of Stablity of the Soft Rock Roadway Under the Water Pressure

This paper uses COMSOL software to build numerical calculation models at different depths and with or without water pressure, and studys soft rock roadway stress and deformation laws in the hydrous and the anhydrous conditions.The results show that the creep deformation of soft rock roadway increases with the increasing of the depth, the deformation in the buried depth of 900 m increases 300% than in the buried depth of 500 m; the the deformation in roof and floor and the two sides is more severe in the role of water pressure, the deformation in water pressure increases 30% than the deformation in no water pressure.