The invention discloses a novel soft arm
tunnel boring machine (TBM) and a tunnel boring method thereof. The problem that a soft arm
tunnel boring machine is low in tunnel boring efficiency in the prior art is solved. By means of the technical scheme, the novel soft arm
tunnel boring machine comprises a cutter head tunnel boring
system, a main beam supporting and protecting
system and a
slag output
system. The cutter head tunnel boring system is arranged at the front portion of the main beam supporting and protecting system. The
slag output system is located on the main beam supporting and protecting system and corresponds to the cutter head tunnel boring system. The cutter head tunnel boring system comprises a rotary-
cut cutter head and a parallel-connection oil cylinder arm. One end of the parallel-connection oil cylinder arm is connected with the rotary-
cut cutter head, and the other end of the parallel-connection oil cylinder arm is rotationally connected with the main beam supporting and protecting system through a rotating mechanism. In the
rock breaking mode of the rotary-
cut cutter head of the cutter head tunnel boring system, forward hobs exist, a plurality of rotary-cut lateral hobs are axially distributed on a fixed cutter cylinder, when the parallel-connection oil cylinder arm for driving the cutter head to move completely retracts, the soft arm tunnel boring
machine mainly performs fracturing
rock breaking through the forward hobs, when a hole needs to be expanded around, the soft arm tunnel boring
machine mainly performs rotary-cut
rock breaking through the lateral hobs of the cutter head, and the novel soft arm tunnel boring
machine adapts to different working conditions and improves the tunnel boring efficiency.