Slurry leakage prevention structure of cast-in-situ bored pile

The utility model discloses a cast-in-situ bored pile grout leakage prevention structure which comprises a cement pipe and a sealing cover arranged at the bottom of the cement pipe, a mounting base arranged on the sealing cover is movably arranged in the cement pipe, sliding rails are symmetrically arranged on the inner wall, located at the top of the mounting base, of the cement pipe, and a plurality of multi-plate mounting frames are movably arranged in the cement pipe. And any long plates which are symmetrically arranged on the multi-plate mounting frame are respectively arranged in the sliding rails in a sliding manner. According to the grout leakage prevention structure for the cast-in-place pile, the cement pipe is matched with the sealing cover to form a top opening type pouring pipe fitting, the multiple multi-plate mounting frames are arranged on the sliding rail in a sliding mode, and the multi-plate mounting frames are rotationally arranged on the main screw rod in a threaded mode; the multi-plate