Air cushion type slurry balance shield tunneling machine for solving stagnant discharge problem and construction method of air cushion type slurry balance shield tunneling machine

The invention discloses an air cushion type slurry balance shield tunneling machine for solving the stagnant discharge problem. The air cushion type slurry balance shield tunneling machine comprises a cutter head, a slurry bin and an air cushion bin, wherein the slurry bin is connected with the air cushion bin through a communicating pipe, slurry enters the slurry bin through a slurry bin slurry inlet pipe, the slurry bin is provided with a spiral conveyor, the front end of the spiral conveyor is installed at the bottom of the slurry bin, the rear end of the spiral conveyor is connected with a slag slurry box, a crusher is installed inside the slag slurry box, a slurry bin direct discharge pipe is further installed at the bottom of the slurry bin and staggered with a slag outlet of the spiral conveyor in space, the rear end of the slurry bin direct discharge pipe bypasses the slurry box to be connected with a main slurry discharge pipe, the upper portion of the air cushion bin is connected with an air pressur