Shield tunnel underwater blasting mud guiding control recovery device and method

The invention discloses a shield tunnel underwater blasting mud guiding control recovery device and a method. The device comprises an end cover, a dense-hole steel wire mesh and a mud collecting floating mat, wherein the end cover comprises a top cover and a buckle, the top cover and the buckle are connected through a sleeve, the inner diameter of the sleeve is larger than the outer diameter of ablasting tube, the buckle is used for being buckled and fixed to the blasting tube, the dense-hole steel wire mesh is arranged above the blasting tube in a covering mode, a mesh opening of the dense-hole steel wire mesh is fixed to the buckle, a through hole is formed in the center of the mud collecting floating mat, the hole diameter of the through hole is larger than the outer diameter of the blasting pipe, and the mud collecting floating mat penetrates through the blasting pipe through the through hole and is flatly laid on the water surface. By means of the device, high-pressure gas can beprevented from driving mu