China Coal mine gas draina GB Standards Search Result |
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GB/T 42638-2023 Method for direct measurement of coal seam gas drainage radius in underground coal mine - Drainage volume method 煤矿井下煤层瓦斯抽采半径直接测定方法 抽采量法 - 中英文版 |
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GB 41022-2021 Basic index of Coal mine gas drainage and exploition 煤矿瓦斯抽采基本指标 - 中英文版 |
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GB 50471-2018 Coal mine gas drainage engineering design standard 煤矿瓦斯抽采工程设计标准 - 中英文版 |
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GB/T 50935-2013 Design document preparation standard of the gas drainage engineering in coal mine 煤矿瓦斯抽采工程设计文件编制标准 - 中英文版 |
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GB 50471-2008 Code for design of the gas drainage engineering of coal mine 煤矿瓦斯抽采工程设计规范 - 中英文版 |
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