Underground diaphragm wall defect leakage water stopping and draining structure

The utility model discloses an underground diaphragm wall defect leakage water stop and drainage structure, and belongs to the technical field of foundation pit engineering, the underground diaphragm wall defect leakage water stop and drainage structure comprises an underground diaphragm wall, a gap exists at the bottom of the underground diaphragm wall, a stud is pre-arranged in the underground diaphragm wall, one end of the stud is fixedly connected with a threaded sleeve, a sealing gasket is laid on one side of the underground diaphragm wall, and the sealing gasket is fixedly connected with the threaded sleeve. The interior of the threaded sleeve is in threaded connection with a bolt, a sealing plate is installed on one side of the underground diaphragm wall through the bolt, one side of the sealing plate is fixedly connected with a sealing block, and a cover plate is installed outside the sealing plate through a screw. According to the underground diaphragm wall, the stud, the threaded sleeve, the bolt, t