Hydraulic resistance to movement of a drill suspended by a cable in a bore-hole in travels

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Equations are given for calculation of the hydraulic resistance force to movement of a drill suspended by cable and the speed of its movement as a function of the dimension and mass of the drill and properties of the hole liquid. The most significant factor influencing the hydraulic resistance during drill movement in the hole is the radial clearance between the drill and bore-hole walls. The methods of experimental study of the drill movement on the laboratory stand are described. The results of the theoretical calculations and measurements of the speed of the drill movement obtained during drilling on Vavilov glacier (Severnaya Zemlya archipelago) are compared : the discrepancy does not exceed 10%.

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詳細情報

  • CRID
    1050283688096211456
  • NII論文ID
    110000010502
  • NII書誌ID
    AA00733561
  • Web Site
    http://id.nii.ac.jp/1291/00002438/
  • 本文言語コード
    en
  • 資料種別
    departmental bulletin paper
  • データソース種別
    • IRDB
    • CiNii Articles

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