Slotting drilling tool for shaped charge blasting of frozen soil

The invention discloses a joint-cutting drilling tool for shaped charge blasting of frozen soil. The joint-cutting drilling tool is composed of a slewing drilling machine and a joint-cutting drilling machine. The drill bit and the drill rod are connected through high-strength bolts. In the first stage, the drill bit drills to the designed depth under the action of the power device and then is lifted to the ground. And in the second stage, the rotary drill bit is replaced with a joint cutting drill bit, the drill bit and the sliding block synchronously move downwards under the action of a hydraulic system, and wedge-shaped joints are cut in the hole wall formed in the first stage through the pressure action of the joint cutting drill bit. The device is characterized in that an energy-gathered blast hole with a plurality of wedge-shaped seams is formed through mutual cooperation of drilling and cutting. The blast hole has the expected effects that after the blast hole is used for charging, high-temperature, hig