• Nitrogen injection to the gob with buried pipes is used in 7235 full-mechanized caving mining face in Xuzhuang Colliery to prevent the left coal oxidizing and self-igniting.

    介绍了徐庄煤矿7235综放面开采采用方式采空区注氮,防止采空区遗氧化自燃

    youdao

  • Nitrogen injection to the gob with buried pipes is used in 7235 full-mechanized caving mining face in Xuzhuang Colliery to prevent the left coal oxidizing and self-igniting.

    介绍了徐庄煤矿7235综放面开采采用方式采空区注氮,防止采空区遗氧化自燃

    youdao

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