A prevent gushing sand structure for shield constructs is under construction

The utility model discloses a prevent gushing sand structure for shield constructs is under construction, including compound stagnant water arc board and sponge strip, compound stagnant water arc board sets up in the front end lower part of last ring canal piece, and compound stagnant water arc board is bonded by billet and rubber tie plate and forms to the cramping is between last ring canal piece and shield structure jack, and the billet contacts with shield structure jack, rubber tie plate and last ring canal piece contact, and the slot that turns over before rubber tie plate's outer fringe department is formed with, rubber tie plate's slot wraps up the outer fringe department at the billet, compound stagnant water arc board forms sealing contact with the shell inboard that the shield constructs the machine, it has the sponge strip to construct at the lower part of last ring canal piece and shield to fill between the shell of machine. The utility model discloses can filter and separation silt, prevent to gush the hour glass thick liquid and construct the harmful effects that the construction caused to the shield, keep shield tail operational environment clean, and then practice thrift the manpower and material resources that the clear mud of shield tail used, practice thrift construction cost, guarantee simultaneously that the shield structure can tunnel as scheduled, the time limit for a project is not influenced.