Gas lift reverse circulation hole cleaning equipment and hole cleaning method for diaphragm wall construction

The invention provides gas lift reverse circulation hole cleaning equipment and a hole cleaning method for diaphragm wall construction, and belongs to the field of buildings. The gas lift reverse circulation hole cleaning equipment comprises a slurry feeding guide pipe, a tank cleaning guide pipe, an air feeding assembly and a sediment separator, the slurry feeding guide pipe is connected into anexcavation groove and used for providing slurry for the excavation groove; the groove cleaning guide pipe is vertically arranged, is provided with an opening in the bottom and is mounted at an openingof the excavation groove, the bottom end is close to the bottom of the excavation groove, and the top end is connected to the sediment separator; and the bottom of the air feeding assembly communicates with the interior of the lower portion of the groove cleaning guide pipe, forms an included angle with the groove cleaning guide pipe and is used for conveying compressed air into the interior of the lower portion of the gr