Non-Dig Directional Mechanism Research on Hard Rock Stratum

Non-dig underground pipeline laying technology is used widely in municipal construction, railway transportation, communications, water conservancy and transportation of petroleum and natural gas fields. Hard rock non-dig construction is a construction field with high technology and construction difficulty in recent years. This paper analyzed the current domestic and international hard rock directional methods and types by used and pointed out its advantages and disadvantages, and put forward a swing driving mode combined with the eccentric bit and DTH to realize Non-dig directional drilling in hard rock. The directional drilling principle is that in directional drilling the eccentric bit lateral force as a fulcrum deflection drilling through the swing mechanism, in order to avoid the drill pipe in curved segment of the cycle characteristics of destruction. On the other hand normal drilling is to use the swing mechanism and the drill pipe coordination with turn slowly to reduce drill speed and the drill pipe damage. The orientation principle is analyzed to solve oriented technology problems and key technologies in hard rock the Non-dig drilling and provides a new method.

• Record URL:
  • https://doi.org/10.1061/9780784412619.173
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784412619
• Supplemental Notes:
  • © 2013 American Society of Civil Engineering.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Wu, Liping
  • Wu, Yinzhu
• Conference:
  • International Conference on Pipelines and Trenchless Technology
  • Location: Wuhan , China
  • Date: 2012-10-19 to 2012-10-22
• Publication Date: 2012-11

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 1725-1731
• Monograph Title: ICPTT 2012: Better Pipeline Infrastructure for a Better Life

Subject/Index Terms

• TRT Terms: Drill bits; Drilling; Hardness; Pipelines; Rocks; Strata; Trenchless technology
• Subject Areas: Construction; Geotechnology; Pipelines; Railroads; I43: Rock Mechanics; I50: Construction and Supervision of Construction;

Filing Info

• Accession Number: 01523734
• Record Type: Publication
• ISBN: 9780784412619
• Files: TRIS, ASCE
• Created Date: Apr 30 2014 9:16AM