Home > Archive>Volume 42, Issue 12, 2015 >57-60
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Study on Hard Rock Drilling Construction by Rotary Drilling Rig Matched with Cluster DTH Hammer
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The Institute of Exploration Techniques, CAGS,Applied Technology College of Jilin University,The Institute of Exploration Techniques, CAGS,The Institute of Exploration Techniques, CAGS,The Institute of Exploration Techniques, CAGS

Clc Number:

634

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    Abstract:

    According to the difficulties for rotary drilling rig in large diameter rock-socketed pile construction in hard rocks, cluster DTH hammer is matched as the solution. JSQ-Z positive circulation and JSQ-F reverse circulation cluster DTH hammers were designed, 3 kinds of construction methods and drilling tools matching scheme are presented, which makes large diameter rotary drilling in hard rocks more rapid, efficient and economical.

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History
  • Received:November 13,2015
  • Revised:November 17,2015
  • Adopted:November 19,2015
  • Online: January 13,2016
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