Dirt cleaning device suitable for flat-bottom and arc-bottom tunnel environment

The invention relates to the technical field of nuclear power operation and maintenance, and particularly discloses a sewage disposal device suitable for flat-bottom and arc-bottom tunnel environments. The device comprises a driving part and a sewage disposal part, the sewage disposal part is arranged on the driving part, a collecting hopper is arranged on the rear portion of the driving part, the sewage disposal part comprises a hydraulic motor, a draining conveying belt and a collecting module, the collecting module comprises a spiral conveyor and is arranged at the bottom of the device, and the rear end of the collecting module is connected with the collecting hopper through the draining conveying belt. A hydraulic motor is arranged at the top of the draining conveying belt to drive the draining conveying belt to rotate, a shovel head is arranged on the lower portion of the collecting module to shovel dirt at the bottom of the tunnel, and the dirt is conveyed to the draining conveying belt through a spiral