Blasting hole sealing positioner and positioning method

The blasting hole sealing positioner comprises a shell, the shell is composed of a connecting pipe, an abutting cylinder and a plugging connector, one end of the connecting pipe is connected with the abutting cylinder, the other end of the connecting pipe is connected with the plugging connector, a clamping jaw is arranged on the inner side of the connecting pipe and penetrates through the connecting pipe to be connected with a blast hole in an inserted mode, and a wire passing hole for a lead to penetrate through is further formed in one side of the plugging connector. The positioning method comprises the following specific steps that firstly, an energy gathering pipe is placed in a blast hole, a lead penetrates through a plugging connector from an abutting cylinder and penetrates through a wire passing hole, and then a shell is placed in the blast hole in the mode that the abutting cylinder abuts against the energy gathering pipe; and 2, the shell is pushed till the energy gathering pipe reaches the blastin