Test simulator researching goaf gas migration under different vitalization conditions

The utility model discloses a test simulator researching goaf gas migration under different vitalization conditions which comprises a pipeline system, a simulated goaf (A), a gas input device (D) and a ventilating device (E); the pipeline system comprises an intake pipeline (B) and a return pipeline (C) communicated with outside air; the simulated goaf (A) is provided with a sealed framework structure; and cracked waste rocks (A2) are filled in the simulated goaf (A); the intake end of the simulated goaf (A) is communicated with the intake pipeline (B); the return end of the simulated goaf (A) is communicated with the return pipeline (C); the gas input device (D) is communicated with the inside of the simulated goaf (A) through a gas transmission pipeline (A3); the ventilating device (E) is connected with the tail end of the return pipeline (C) and is provided with an exhaust port (E11) used for exhausting air. The relevant parameters under different vitalization conditions are analyzed and compared by the te