Sand-blast workshop for immersed tube tunnel steel shells and ship blocks

The invention relates to the technical field of ships, in particular to a sand-blast workshop for immersed tube tunnel steel shells and ship blocks. The sand-blast workshop comprises a plant, tracks,an overhead travelling crane, a first sand-blast robot and a second sand-blast robot, wherein the plant is provided with a containing cavity, and a workpiece to be sand-blasted is arranged in the plant; the tracks are longitudinally arranged in the plant; the overhead travelling crane is arranged on the tracks and can move in the extension direction of the tracks; the first sand-blast robot is arranged on the overhead travelling crane in a sliding manner and can perform reciprocating motion in the length direction of the overhead travelling crane so that the side face and top face of the workpiece can be sand-blasted; and the second sand-blast robot is arranged on the ground of the plant and can move on the ground the plant so that the bottom of the worpiece can be sand-blasted. By means of the sand-blast workshop