Standard Number: NB/T 10123-2018(NB/T10123-2018)
Chinese:煤矿瓦斯抽采钻孔“两堵一注”封孔工艺技术条件
English:Technical conditions of “two plugging and one injection” sealing process for coal mine gas extraction drill holes
Effective Date:2019-05-01
Standard Applicability:
PDF Downloadable: N
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