System and method for testing impact shear permeability of artificial crack sample

The invention discloses an artificial fracture sample impact shear permeability test system and method.The artificial fracture sample impact shear permeability test system comprises a confining pressure loading system, an impact shear system and a permeability test system.The confining pressure loading system can apply different confining pressures to a sample, and meanwhile an impact rod and a transmission rod can be pressed, fixed and sealed with a sample holder; sealing is carried out when the permeability is measured subsequently; the impact shearing system is used for applying impact force when the sample is subjected to impact shearing, so that impact shearing dislocation of the sample is realized through asymmetrically arranged protruding parts of a first shearing head and a second shearing head, and a self-supporting structure is formed in the sample to support a generated crack after the test is completed; and finally, comparing and analyzing the permeability before and after impact shearing, and car