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Volume 37 Issue 7
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TAN Zhuo-ying, LI Wen, YUE Peng-jun, WANG Li, LI Ji-yang, QI Kuan, ZHOU Dong. Techniques and approaches for identification of geo-formation structure based on diamond drilling parameters[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(7): 1328-1333. DOI: 10.11779/CJGE201507021
Citation: TAN Zhuo-ying, LI Wen, YUE Peng-jun, WANG Li, LI Ji-yang, QI Kuan, ZHOU Dong. Techniques and approaches for identification of geo-formation structure based on diamond drilling parameters[J]. Chinese Journal of Geotechnical Engineering, 2015, 37(7): 1328-1333. DOI: 10.11779/CJGE201507021
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Techniques and approaches for identification of geo-formation structure based on diamond drilling parameters

  • School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China

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  • Received Date: August 22, 2014
  • Published Date: July 19, 2015
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    • Abstract
  • The geo-formation structure is an original impact factor for the stability and safety of geotechnical and geological engineering and also an important content of field survey. A geo-formation identification while drilling (GIWD) system is developed, and its operating principles as well as the basic units are illustrated. The drilling process is coded, and a real-time identification method for the geo-formation structure is established. Besides, the ranges of specific energy values in weathered rock and structural rock mass of soil layer/scattered, cracked and intack granite are determined. The classification standard of diamond drilling specific energy for geo-formation is formulated and verified by in-situ drilling tests. The specific energy values are 0.0017~0.6955 kN·m/cm3 for the soil layer and scattered structure, 0.0258~0.9798 kN·m/cm3 for the cracked rock and 0.0018~2.4935 kN·m/cm3 for the intack rock, respectively. The results show that the above approach agrees with the traditional investigation and can further be applied for real-time recognition of strata and geotechnical structure, and it may provide a new approach for geotechnical engineering survey.
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    • References (12)
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