Abstract
To solve the problem of large deformation soft rock roadway with complicated stress condition in Baluba copper mine, the characteristics of roadway deformation and failure modes are analyzed deeply on
the basis of geological survey. Combined with the theoretical analysis and numerical simulation, the new reinforcement technology with floor mudsill and grouting anchor cable is proposed. Moreover, the three
dimension numerical simulation model is established by the software FLAC-3D, the support parameter
is optimized by it. The results show that the optical array pitch of the U-steel shelf arch is 0.8 m, and the
optical array pitch of the grouting anchor cable is 2.4 m. At last, the field experiments are done all over
the soft rock roadway. Engineering practice shows that the deformation of soft rock roadway in Baluba
copper mine is effectively controlled by adopting the new reinforcement technology, which can provide
certain references for similar engineering.
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