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李子垭煤矿已确定为有煤和瓦斯突出危险矿井，有两个可采煤层，其层间距平均１．１ｍ。矿井瓦斯涌出量达到４１．９ｍ￣３／ｍｉｎ，回采面达到８．０３～１０．８３ｍ￣３／ｍｉｎ，仅用通风的办法不能解决瓦斯问题，为了矿井安全生产的需要，建立矿井瓦斯抽放系统势在必行。通过试抽考察研究，证明在李子垭矿极近距离煤层条件下，采用综合抽放方法可以获得较好的抽放效果，并为合埋设计矿井瓦斯抽放系统提供了必要的设计参数。
The Lizazya Mine has been identified as coal and gas outburst danger mines, with two recoverable seams, with an average spacing of 1.1m. Mine gas emission reached 41.9m ~ 3 / min, back to the face of 8.03 ~ 10.83m ~ 3 / min, only the ventilation method can not solve the gas problem, for mine safety needs, the establishment of mine gas pumping Put the system is imperative. Through the pilot pumping study, it is proved that the comprehensive drainage method can get better drainage effect under the condition of very close coal seam in Liziya Mine and the necessary design parameters are provided for the gas drainage system of buried coal mine.