Method for assembling overweight prefabricated mid-partition wall in large-diameter tunnel

The invention relates to a method for assembling an overweight prefabricated mid-partition wall in a large-diameter tunnel. The method adopts mid-partition wall mounting equipment and comprises the following steps that 1), advancing/reversing is carried out by using a double-end transport vehicle, and the mid-partition wall is carried to a to-be-clamped position of a mounting device; 2), a vehicle-mounted adjusting support rotates and translates the mid-partition wall to the middle of a bow-shaped clamping device; 3), the bow-shaped clamping device advances to a reserved center hole of the mid-partition wall to be aligned and fixed; 4), hydraulic devices at the two ends of the bow-shaped clamping device are used for jacking the mid-partition wall for unloading, and the double-end transport vehicle exits; 5), after the mid-partition wall is rotated to be vertical by the bow-shaped clamping device, the mid-partition wall is preliminarily moved to the to-be-assembled position; 6), left-right and transverse-longi