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%.
李守红. 高瓦斯矿井回采工作面瓦斯治理[J]. 煤炭与化工, 2018, 41(10): 108-110,114.
Li Shouhong. Gas control of recovery mining in high gas mine. CCI, 2018, 41(10): 108-110,114.