What is the purpose of coal mine gas drainage?

1, to prevent gas overrun and ensure mine safety in production. 2, mining protective layer and mine with gas drainage system, should be through the protective layer pressure relief and gas drainage. 3. Pre-pumping gas can be used as a regional or local outburst prevention measure in unprotected mines. 4, the development and utilization of gas resources, turn harm into benefit. 5. Protect the environment, reduce air pollution, reduce the greenhouse effect caused by gas discharged into the atmosphere, and beautify our home.

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