Protection structure and method for reserved lap joint section of waterproof roll

The invention discloses a protection structure and method for a reserved lap joint section of a waterproof roll. The protection structure comprises a poured waterproof protection layer. The number of the partition square timbers is multiple, and one ends of the partition square timbers are connected with the poured waterproof protection layer; the concrete pressing blocks are poured between the partition square timbers; the end sealing square timber is arranged at the other end of the separation square timber, and the end sealing square timber is connected with the separation square timber; the coiled material is arranged at the bottoms of the poured waterproof protection layer, the concrete pressing block and the separation square timber; isolation films are arranged between the separation square timber and the poured waterproof protection layer, between the concrete pressing block and the poured waterproof protection layer, between the coiled material and the concrete pressing block and between the coiled m