Shield sealing device and shield sealing method

A shield sealing device,

• a pile wall is arranged at a shield receiving opening, the shield sealing device is mounted on the pile wall, and the shield sealing device comprises:
• an elastic inner ring, an inner wall of the elastic inner ring adapting to an outer wall of a cutter head of a shield tunneling machine;
• and
• a plurality of control units, the plurality of control units being mounted on the pile wall,
• the plurality of control units being arranged in a circumferential direction of the elastic inner ring at intervals, and a driving end of each of the plurality of the control units pressing against an outer side of the elastic inner ring so as to extrude or release the elastic inner ring;
• the elastic inner ring is made of rubber, and an interior of the elastic inner ring is inflated.