In order to solve the gas control problem of upper corner and air return in close coal seam recovering mining, recovering mining working face of Wanfeng Mine was taken as example, large diameter long drilling and floor intercepting drilling to drainage close coal seam pressure relief gas, wall chamber controlling gas technology were put forward. The result showed that, the comprehensive gas control technology solved the large air leakage in goaf, the gas content reduced by 0.2%, gas content in upper corner stabilized at 0.5%, without gas overrun in recovering mining.
张育磊，高 杰，毛国力. 近距离煤层群回采工作面瓦斯综合治理方法的探讨[J]. 煤炭与化工, 2018, 41(1): 115-117,121.
Zhang Yulei, Gao Jie, Mao Guoli. Study on gas control technology in close coal seam group recovering mining. CCI, 2018, 41(1): 115-117,121.
