Water and sand stopping device for slurry balance pipe jacking hole in quicksand geology

The utility model relates to the technical field of water stopping and sand stopping in quicksand geology, in particular to a water stopping and sand stopping device for a slurry balance pipe jacking hole in quicksand geology, which is characterized in that a bottom plate is arranged on the slurry balance pipe jacking hole, and a sealing component is arranged on the bottom plate; under the action of the top plate clamping pieces, the effect of clamping the top plate and the sealing component can be achieved, the situation that the top plate and the sealing component are separated from the bottom plate is avoided, a buffer layer is formed between the bottom plate and the top plate, and the situation of gushing caused by too large underground water pressure is relieved; and the sealing part is arranged on the bottom plate, so that under the action of the sealing part, the situation that underground water drives sand and stones to gush out of the construction jacking hole can be avoided, and the problems that in