Aiming at the 15102 transport tunnels,which are affected by the X4 fallout columns during the tunneling,the surrounding rock is seriously broken after entering the fallout column area,which is concentrated in the top plate broken and leakage,and the two gangs are converged,resulting in the poorly shaped roadway,the low efficiency of tunneling,and the low safety coefficient,etc.,Zhongyue Coal Mine analyses the original support process and the problems of the roadway through the technological research and makes reasonable optimization of the support of the roadway in the fallout column area,proposing the"self-locking anchor+truss anchor+support technique".Through the technical research,Zhongyue Mine analysed the original support process and problems,and reasonably optimized the support of the roadway in the trapped pillar area,and put forward the joint support technology of"self-locking anchor rods,truss anchor ropes,and π-type steel sheds",and through the actual application effect,the deformation and fragmentation of the surrounding rock is effectively controlled by the adoption of the joint support measures,and the significant application results have been achieved.
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