Standard Number: NB/T 11028-2022(NB/T11028-2022)
Chinese:煤矿井下废弃瓦斯抽采钻孔封闭技术规范
English:Technical Specification for Closure of Abandoned Underground Gas Extraction Drill Holes in Coal Mines
Effective Date:2023-05-04
Standard Applicability:This document applies to the permanent closure of abandoned gas extraction boreholes.
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