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Drilling Tech. On Inbreak Caving-in Area
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P634

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    Abstract:

    阐述了坍塌松散层钻探施工的钻孔结构、钻进方法、钻孔防斜措施及优质低密度泥浆的应用。

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History
  • Received:October 10,2003
  • Revised:October 10,2003
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