Research and practice of perimeter rock control technology for deep soft rock roadway

In view of the problem of large deformation of the surrounding rock and low strength of the original support for the return tunnel of the 2501 working face in Fowu Mine, the current deformation status of the surrounding rock of the roadway was analysed through on-site investigation, and the joint support scheme of "anchor ropes, steel ladder beams, metal mesh and U-beam" was proposed, and the scheme was verified to be effective and feasible by using the numerical simulation software of FLAC3D and applied to the on-site engineering practice. The scheme was validated by FLAC^3D numerical simulation software and applied in the field engineering practice. The results show that: after adopting the optimised support scheme, the maximum displacement of the top and bottom plates of the roadway is 465 mm, the maximum displacement of the two gangs is 410 mm, the maximum bottom drum is 209 mm, and the deformation of the surrounding rock is greatly reduced, which indicates that the support scheme is effective in controlling the surrounding rock of the roadway of the soft rock in the deep part of the roadway.