Dredging and stagnant discharging device of super-large-diameter slurry shield tunneling machine

The utility model discloses a dredging stagnant discharge device of an ultra-large-diameter slurry shield tunneling machine, and aims to solve the problem that an existing shield tunneling machine is insufficient in applicability in a stratum with non-uniform hardness. The device comprises a direct discharge slag discharging system and a screw machine slag discharging system, the screw machine slag discharging system comprises a screw conveyor and a crushing assembly, the feeding end of the screw conveyor is arranged in a muddy water bin of the shield tunneling machine, a slag outlet is formed in the bottom of the other end of the screw conveyor, a gate is arranged at the slag outlet, and the slag outlet is connected to the crushing assembly; the direct discharge deslagging system comprises a slurry inlet pipe, a slurry discharge pump and a plurality of direct discharge pipes, one end of each of the slurry inlet pipe and the direct discharge pipes is arranged in the muddy water bin, and the other end of each