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Multi-Process Rotary Digging Tools and Their Application in Frozen Formation

LIU San-yi1，2,XIAO Bai-ru1   

  1. 1.College of Engineering Technology, China University of Geosciences, Beijing 100083,China;2.Institute of Exploration Techniques, Chinese Academy of Geological Sciences, Langfang,Hebei 065000,China
  • Received:2008-02-18 Revised:1900-01-01 Online:2008-05-26 Published:2008-05-26
  • Contact: LIU San-yi

Abstract: According to the problems of mismatching drilling tools with drilling rigs and maladjustment the structure of drilling tools to strata for the application of the rotary digging technology in China, the BS series of buckets and the AG series auger bits were developed. The benefits were resulted in field application case of Qing Tibet railway, and the technology problems of construction large diameter plies in frozen earth were solved. The average drilling PRM is 2～4 times than the import tools and up to 6～10 m/h.

Key words: multi-process, rotary digging, drilling tool, frozen formation

CLC Number: 

  • P634.4
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