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Abstract In order to ensure the normal recovering mining of high gas mine, the gas occurrence of mining seam adjacent seam, the predicted maximum gas emission 34 m3/min, based on the different Original gas content and pre-pumping time of coal seam, the number of bore hole design was 6~16, the daily coal output achieved 4 500 t, absolute gas emission 32 m3/min, return airflow gas concentration 0.4%, Air discharge 6.5 m3/min, gas drainage volume 25.5 m3/min, drainage rate 79%.
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