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Metal Mine ›› 2023, Vol. 52 ›› Issue (05): 45-58.

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Research Progress of Rock Mass Structure and Mechanical Parameter Characterization Based on Measurement While Drilling Technology

YU Qinglei WANG Yuheng LI You CAO Yongsheng PU Jiangyong #br#   

  1. School of Resources and Civil Engineering,Northeastern University,Shenyang 110819,China
  • Online:2023-05-15 Published:2023-06-15

Abstract: The rock mass structure characterization and mechanical parameters determination are hot issue in the field of rock mechanics and serve as crucial basis for metal mining design. How to determine the mechanical parameters of rock mass has always been a challenging task in the field of rock mechanics due to the complexity and spatial variability of natural rock mass structures. Measurement while drilling (MWD) technology provides an easy and rapid in-situ testing method that enables the assessment of rock mass characteristics and strength during the drilling process by utilizing the response of the drill bit,and the MWD has incomparable advantages combined with drilling and blasting in the mining industry. Extensive studies have been conducted on MWD both domestically and internationally,leading to significant achievements. This paper provides a comprehensive overview of the MWD research findings from the 1970s to the present and recent advances in MWD research,including the test facility for MWD research,rock mass characterization while drilling,and rock strength estimation while drilling,and the limitations of the MWD research are also analyzed. Finally,based on the studies and findings of our group,the possible development directions for MWD are pointed out,providing a reference for future research and application of the technology.