Anti-blocking device and anti-blocking method for outlet of screw conveyor of shield tunneling machine

The invention discloses a screw conveyor outlet anti-jamming device of a shield tunneling machine, which comprises a depth image sensing device and a recognition device, and is characterized in that the depth image sensing device is mounted at the position of an unearthed pipe of a screw conveyor and is used for monitoring the unearthed pipe, and the recognition device recognizes the clamping stagnation position of a reinforcing steel bar; the side direction of the soil outlet pipe communicates with a cutting work box, a cutting mechanical arm is arranged in the cutting work box, and the head end of the cutting mechanical arm is provided with a cutting head used for cutting reinforcing steel bars. The cutting mechanical arm is electrically connected with the recognition device and drives the cutting head to move to the steel bar clamping stagnation position to cut the steel bar according to the steel bar clamping stagnation position information recognized by the recognition device. The invention further discl