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分析了放顶煤工作面瓦斯涌出的特点 ,介绍了采用瓦斯排放巷在治理炮放和综放工作面瓦斯的经验和取得的效果
The characteristics of gas emission from caving coal face are analyzed, and the experience and achievements of using gas discharge roadway to control the gas in gunneling and fully mechanized coal caving face are introduced