Water-injection plastic water pipe steel cofferdam gap water stopping device

The utility model discloses a water injection plastic water pipe steel cofferdam gap water stopping device, which relates to the technical field of steel cofferdam gap water stopping and comprises a steel cofferdam template, and one side of the steel cofferdam template is fixedly connected with a wallboard connecting strap pipe. The inner side flexible plastic pipe, the outer side plastic pipe, the cofferdam wall plate connecting bolt, the wall plate connecting strap and the steel cofferdam formwork are matched, the inner side flexible plastic pipe which is equal to the steel cofferdam formwork connecting wall plate connecting strap in width and length is cut, and the inner side flexible plastic pipe is pasted to the wall plate connecting strap on one side of the steel cofferdam formwork. The steel cofferdam formwork is tried and assembled, the formwork is finely adjusted, cofferdam wall plate connecting bolts are fastened, rubber equipment is replaced with the flexible plastic pipes on the inner side, the se