煤矿采掘工作面覆岩观测孔施工技术应用——以山西省黄岩汇井田15100采掘工作面为例
매광채굴공작면복암관측공시공기술응용——이산서성황암회정전15100채굴공작면위례
Application of Coalmine Extraction Face Overlying Rock Observation Hole Construction——To Take the No.15100 Extraction Face of Huangyanhui Minefield, Shanxi Province as Example
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