Rock slag collecting device for graded hammering of tunnel surrounding rock

The invention relates to the field of tunnel rock slag collection, and discloses a tunnel surrounding rock graded hammering rock slag collection device which comprises a box body of an open structure, a mounting plate is arranged on the top of the side wall, close to one side of a rock wall, of the box body, and a plurality of abutting plates with the movable ends connected with the rock wall are laid on the mounting plate in the length direction of the mounting plate; each abutting plate is fixedly provided with a telescopic rod, a plurality of penetrating holes are formed in the plate body of the mounting plate, and the telescopic rods penetrate through the corresponding penetrating holes and are elastically connected with the plate body of the mounting plate. By arranging the abutting plate connected with the rock wall and the telescopic rod elastically connected with the plate body of the mounting plate, the box body can abut against the rock wall through the abutting plate to collect rock slag, the rock