Application of Submersible Air Hammer Drilling in Jingxi Coal Field[J]. COAL GEOLOGY & EXPLORATION, 1989, 17(1): 57-62.
Citation: Application of Submersible Air Hammer Drilling in Jingxi Coal Field[J]. COAL GEOLOGY & EXPLORATION, 1989, 17(1): 57-62.
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Application of Submersible Air Hammer Drilling in Jingxi Coal Field

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  • The paper presented the significant results obtained by using an air hammer to drill shallow hard, water-losing rocks.The combination of equipments and the choice of technology of subersible air hammer drilling.
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