Consolidation grouting hole structure of underground powerhouse top arch

The utility model discloses a consolidation grouting hole structure of an underground powerhouse top arch, which comprises a positioning cylinder, a sleeve is sleeved in the positioning cylinder, a hopper is fixed at the top end of the sleeve, an external thread is arranged on the outer wall of the sleeve, a movable bin is arranged at the front end of the sleeve, a movable plate is sleeved in the movable bin, and the movable plate is fixed on the movable bin. Fixing rods are fixed to the two sides of the outer wall of the sleeve, lantern rings are fixed to the top ends of the fixing rods, and sliding rods are arranged in the lantern rings in a sleeved mode. Through mutual cooperation of a movable bin, a movable plate, a fixed rod, a lantern ring, a sliding rod, a limiting block, a spring, a connecting block and a pull handle, the problem that a material conveying pipe is possibly accidentally separated from a positioning cylinder in the using process due to a handheld mode, and resource waste is caused is sol