Detachable anti-permeation shield tail brush and shield tunneling machine

The utility model discloses a detachable seepage-proof shield tail brush and a shield tunneling machine. The detachable seepage-proof shield tail brush comprises a base, a steel wire bundle assembly,a protection plate and a pressing plate. The base comprises a bottom plate, a top plate and two baffles, the top plate is arranged on the bottom plate, the two baffles are arranged on the two sides ofthe bottom plate and the two sides of the top plate respectively, the bottom plate, the top plate and the two baffles are matched to form a containing cavity, and a clamping groove is formed in the inner side wall of the containing cavity. The steel wire bundle assembly comprises a steel wire bundle, a wrapping ring used for wrapping the steel wire bundle and a clamping part arranged on the wrapping ring. The wrapping ring is located at the root of the steel wire bundle. The root of the steel wire bundle is accommodated in the accommodating cavity, and the clamping part is clamped in the clamping groove. The protectio