Carbon dioxide ultra-high-speed phase-changing mining machine

The utility model discloses a carbon dioxide ultra-high-speed phase-changing mining machine which comprises a storage pipe, a trigger device and a fixed pressure energy releasing device. The storage pipe is used for storing liquid carbon dioxide. The trigger device is connected with the storage pipe. When the trigger device is triggered, the liquid carbon dioxide in the storage pipe is heated to be gaseous carbon dioxide. The fixed pressure energy releasing device is arranged at a discharge port of the storage pipe. When the pressure exerted on the fixed pressure energy releasing device reaches a preset value, the discharge port of the storage pipe is opened, and the gaseous carbon dioxide in the storage pipe is released. According to the carbon dioxide ultra-high-speed phase-changing mining machine, the characteristic that the kinetic energy is high after the liquid carbon dioxide is changed to the gaseous carbon dioxide to be discharged out is utilized, so that a coal (rock) area stressed by the high kinetic energy is broken, the permeability coefficient in a coal seam of a coal mine is improved, the coal seam gas extraction efficiency or the mining efficiency is improved, economic benefits are increased, and due to the fact that open fires and flames are avoided, gas exploration accidents, coal dust exploration accidents and other potential safety hazards are prevented.