Test method for improving coal rock permeability and device thereof

A test method for improving coal rock permeability and a device thereof particularly relate to a test method and a device thereof which can improve coal rock permeability by changing the pore structure and mechanical properties of coal rocks through an electroosmosis action. The method includes that a positive electrode and a negative electrode are arranged at two ends of a coal rock sample to perform the electroosmosis action, the coal rock permeability is measured before and after the electroosmosis action and during the process of the electroosmosis action, a mechanism of the electroosmosis action on intensifying the coal rock permeability is researched, intensifying parameters are optimized, and a scientific theoretical basis is provided for an engineering application of improving the coal rock permeability by means of the electroosmosis. The device comprises a three-spindle seepage test room, a plunger pump, a water injection pump, a water tank and a direct-current power supply. The device is simple in s