In order to ensure the gas not overrun in 3303 working face after the improvement of ventilation in Dayang Mine, gas drainage, gas emission ratio and gas drainage ratio, numerical simulation was conducted based on the measurement result, the result showed that wind drainage was mainly adopted in the mine gas drainage, assisted by gas drainage, U type ventilation working face was taken the place of the U+I type with small leaking wind to make fresh air flow into the deep area. Gas control plan of directional level long drilling hole + high level of directional drilling + buried pipe in upper corner was settled, with correction of the equipment in the plan, the gas drainage system can meet the needs of production.
乔马东. 大阳煤矿3303工作面瓦斯抽采关键技术优化研究[J]. 煤炭与化工, 2016, 39(6): 77-81.
Qiao Madong. Study on Dayang Mine 3303 working face gas drainage mining key technology optimization. CCI, 2016, 39(6): 77-81.