Cofferdam with locking steel pipe piles

The cofferdam comprises a plurality of steel pipe piles, female lock catches and male lock catches are symmetrically arranged on the outer walls of the two sides of the steel pipe piles in the axis direction of the steel pipe piles, and the female lock catches are provided with open grooves; the two adjacent steel pipe piles are connected in a meshed mode through the female lock catches and the male lock catches, at least part of the male lock catches of the adjacent steel pipe piles are contained in the opening grooves of the female lock catches of one steel pipe pile, lock catch cavities are defined by the inner walls of the opening grooves of the female lock catches and the peripheral faces of the male lock catches, and the lock catch cavities are filled with sealing slurry. The utility model relates to the technical field of cofferdam construction, the locking steel pipe pile cofferdam is formed by the steel pipe piles which are buckled and connected through the female lock catches and the male lock catch