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岩层顶板瓦斯巷具有显著的排放效果,良好的经济效益和较高的工效,是一种行之有效的保证一通三防工作,提高工作面产量的重要途径。
Gas tunnel roof rock has significant emission effect, good economic efficiency and high efficiency, is an effective way to ensure a work of three prevention, an important way to improve production.