Non-coupling shaped charge blasting device and blasting method

The non-coupling shaped charge blasting device comprises a plurality of hard charge straight pipes, end plates or end covers are arranged at the two ends of each charge straight pipe, a V-shaped shaped charge groove is formed in the pipe wall of each charge straight pipe, and positioning strips with T-shaped cross sections are further connected to the two radial sides of each charge straight pipe. All the straight explosive charging pipes are connected in series along a straight line to form an explosive pipe string through hard booster pipes or all the straight explosive charging pipes are directly connected in series along a straight line to form the explosive pipe string, and an end plate or an end cover of each straight explosive charging pipe located at the front end of the explosive pipe string is provided with a detonator installation connector. And an explosive charging port and a sealing cover connected with the explosive charging port are arranged on the explosive charging straight pipe positioned a