The present disclosure provides a shield sealing device and a shield sealing method, a fender post is arranged at a shield receiving opening, the shield sealing device is mounted on the fender post, 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 fender post, the plurality of control units being arranged in a circumferential direction of the elastic inner ring at intervals, and a driving end of the control part pressing against an outer side of the elastic inner ring so as to extrude or release the elastic inner ring.

A shield method includes the steps: providing a first cylindrical frame 31 at a position where an entrance 12 is to be formed in an inner surface of an earth retaining wall 11 of a shaft 1; excavating a horizontal hole 5 in the underground by a shield machine 2, and sequentially adding and building, in the excavation direction, a plurality of segments 4 on an inner diameter side of the horizontal hole 5 while forming the entrance 12 in the shaft 1; temporarily stopping water from a gap between the entrance 12 and the shield machine 2, and removing excavated soil and pieces 6 that enter the first cylindrical frame 31 as the entrance 12 is formed; and coupling a second cylindrical frame 32 having a sealing member 35 attached thereto to an inner open end of the first cylindrical frame 31.

A hypergravity model test device for simulating a progressive failure of a shield tunnel face, including a model box, a shield tunnel model, a servo loading control system and a data acquisition system. The servo loading control system includes a servo motor, a planetary roller screw electric cylinder and a loading rod. The data acquisition system includes a displacement transducer, an axial force meter, a pore pressure transducer, an earth pressure transducer and an industrial camera. The servo loading control system is connected to an excavation plate through the loading rod to control the excavation plate to move back and forth along an axial direction of the shield tunnel model at a set speed to simulate failure of the shield tunnel face. A method for simulating a progressive failure of a shield tunnel face is also provided.

A shield method includes the steps: providing a first cylindrical frame 31 at a position where an entrance 12 is to be formed in an inner surface of an earth retaining wall 11 of a shaft 1; excavating a horizontal hole 5 in the underground by a shield machine 2, and sequentially adding and building, in the excavation direction, a plurality of segments 4 on an inner diameter side of the horizontal hole 5 while forming the entrance 12 in the shaft 1; temporarily stopping water from a gap between the entrance 12 and the shield machine 2, and removing excavated soil and pieces 6 that enter the first cylindrical frame 31 as the entrance 12 is formed; and coupling a second cylindrical frame 32 having a sealing member 35 attached thereto to an inner open end of the first cylindrical frame 31.

The present disclosure provides a shield sealing device and a shield sealing method, 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 the control part pressing against an outer side of the elastic inner ring so as to extrude or release the elastic inner ring.

A hypergravity model test device for simulating a progressive failure of a shield tunnel face, including a model box, a shield tunnel model, a servo loading control system and a data acquisition system. The servo loading control system includes a servo motor, a planetary roller screw electric cylinder and a loading rod. The data acquisition system includes a displacement transducer, an axial force meter, a pore pressure transducer, an earth pressure transducer and an industrial camera. The servo loading control system is connected to an excavation plate through the loading rod to control the excavation plate to move back and forth along an axial direction of the shield tunnel model at a set speed to simulate failure of the shield tunnel face. A method for simulating a progressive failure of a shield tunnel face is also provided.

The present invention discloses a movable visual inspection device for shield machines, comprising a rail and an inspection platform. The rail is installed on a shield tail, and the inspection platform includes a bottom plate, a shell, a cleaning mechanism, a power storage control system, and a traveling mechanism. Inside the shell is a visual inspection mechanism with a camera box, a camera, and a stabilizer component. The traveling mechanism drives the bottom plate along the rail. The cleaning mechanism, consisting of a glass sheet, a reel driving part, and a cleaning film, keeps the camera lens clear. The reel driving part rotates the cleaning film, which slides against the glass sheet on the camera box. This invention enables multi-faceted and multi-angle visual inspection of shield machine segments, ensures a clear camera lens, facilitates automatic cleaning and inspection position adjustment, and enhances working efficiency and inspection effectiveness.