Carbon dioxide drilling, injecting and blasting integrated device and method

The invention discloses a carbon dioxide drilling, injecting and blasting integrated device and method, and relates to the technical field of construction blasting, the carbon dioxide drilling, injecting and blasting integrated device comprises a drill bit, the outer wall of the drill bit is in threaded connection with a connecting nut, one side of the connecting nut is fixedly connected with a semicircular copper sheet, and the side, away from the connecting nut, of the semicircular copper sheet is fixedly connected with a pipe body. Through integration of drilling, liquid injection and detonation, previous tedious procedures are simplified, construction is easier and more convenient, consumed time is short, the construction efficiency is higher, carbon dioxide gas can be discharged in all sections and all directions of a pipe body, the coal rock mass fracturing effect is greatly improved, when the borne pressure in the pipe reaches a certain value, bolt type energy release pieces can be rapidly broken throu