STUDY ON THE SUPPORTING STRUCTURE AND NUMERICAL SIMULATION OF DEEP SOFT ROCK BOTTOM DRAINAGE ROADWAY
The surrounding rock of the bottom drainage roadway in Chiyu Mine is taken to study the support chal-lenges of deep soft rock bottom drainage roadway.Combined with the actual engineering background,a support scheme combining anchor mesh spray and roof anchor cable is proposed.By combining the project's measured data of the project with the simulation results of ABAQUS finite element software,the effectiveness and rationality of the support scheme are comprehensively discussed.The results indicate that the stress of the surrounding rock is primar-ily concentrated in the lower part of the roadway floor and the upper part of the roof.The displacement changes of the anchor net,cable,and rod are most concentrated on the side position of the anchornet.The shallow deformation of the surrounding rock is small and the stress value is low,indicating that the supporting structure has exerted its support efficiency and played a good active supporting role.
soft rock bottom drainage roadwayroof anchor cablestress in the surrounding rock