Improved post-pouring strip advanced water-stopping construction method

Provided is an improved post-pouring strip advanced water-stopping construction method. A structure is thickened on a post-pouring strip portion in advance to form a whole, a post-pouring strip is stripped out, a water-swelling water-stopping strip is arranged in the middle of the thickened portion to meet the requirements of different settlement and telescopic deformation, and the water-stopping effect can be achieved before pouring of the post-pouring strip of a basement. The construction method includes the steps of digging of a post-pouring strip basic earthwork, bottom plate and post-pouring strip cushion layer construction, leveling blanket construction, waterproof layer construction, protective layer construction, installation of the post-pouring strip and an externally attached water-stopping strip, reinforced steel rib installation, formwork installation, installation of a post-pouring strip side face quick and simple net, basement bottom plate concrete pouring and post-pouring strip concrete construction. The basement does not leak water after construction by means of three local waterproof measures of the externally attached water-stopping strip, the water-swelling water-stopping strip and the post-pouring strip, water pumping is barely needed in the basement, construction is convenient, and operation is easy.