The invention discloses a
simulation test method and device for inhibiting
methane desorption effect by
coal seam water injection. The device comprises an isothermal
desorption system, a ground stress applying
system, a
methane gas injection
system and a high-pressure water injection system, wherein the isothermal
desorption system comprises a desorption unit, a vacuum degassing unit and a constant-
temperature unit; the ground stress applying system, the
methane gas injection system, the high-pressure water injection system, the vacuum degassing unit and the constant-
temperature unit are respectively connected with the desorption unit; after an experiment
coal sample is put into the desorption unit, the constant-
temperature unit is used for providing a water bath constant temperature to the desorption unit; the vacuum degassing unit is used for vacuumizing the desorption unit; the high-pressure water injection system is used for injecting water into the
coal sample and the
methane gas injection system is used for injecting methane into the coal sample; the ground stress applying system is used for applying pressure to the coal sample; and the desorption unit is used for analyzing a desorption property of the
methane gas in the coal sample to obtain data. The device is simple in structure and the testing method is simple, so that people can utilize the methane desorption inhibiting effect of the coal seam water injection to carry out coal and gas outburst prevention and treatment very well.