It was proved in practice that this scheme used for the renovation and consolidation of lined drift not only guaranteed longterm stabilization of the drift but also achieved obvious economic benefits.

  • 实践表明 ,采用该方案对砌碹巷道进行修复加固 ,不仅保证了巷道的长期稳定 ,而且还取得了显著的经济效益
目录 查词历史