Directional Drilling for Methane Drainage in Advance of Mining;
采前瓦斯抽放定向钻进技术
Controlling measures of methane and coal dust and ventilation method in fully mechanized excavation face;
综掘工作面治理瓦斯煤尘通风方法的探索
Integrated control technology for methane in mining faces;
回采工作面瓦斯综合治理技术