Anti-floating device applied to blasting charge for blasting water-containing blast hole

The invention relates to an anti-floating device applied to a blasting charge for blasting a water-containing blast hole, which comprises a charging pipe, a blasting charge and an anti-floating device, and one end of the charging pipe is closed; the explosive charge is loaded into the explosive loading tube from the open end of the other end of the explosive loading tube; the anti-floating device comprises an expanding support with the two ends compressed to enable the middle to be expanded, an abutting head and a connecting toothed plate, one end of the expanding support is connected with the closed end of the charging pipe, and the other end of the expanding support is provided with a clamping hole and connected with the connecting end of the abutting head. The connecting end of the abutting head is provided with an extending hole corresponding to the clamping hole. One end of the connecting toothed plate is fixed with the closed end of the charging pipe, and the other end is in one-way sliding connection w