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Evaluation of Active Layer Depth using Dynamic Cone Penetrometer

동적 콘 관입기를 이용한 활동층 심도평가

  • Hong, Won-Taek (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Kang, Seonghun (School of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Park, Keunbo (Arctic Research Center, Korea Polar Research Institute) ;
  • Lee, Jong-Sub (School of Civil, Environmental and Architectural Engineering, Korea University)
  • Received : 2015.11.24
  • Accepted : 2015.12.14
  • Published : 2016.01.01

Abstract

An active layer distributed on surface of an extreme cold region causes a frost heave by repeating the freezing and thawing according to the seasonal temperature change. Since the height of frost heave is greatly affected by the thickness of active layer, an accurate evaluation of the thickness of active layer is necessary for the safe design and construction of the infrastructure in the extreme cold region. In this study, dynamic cone penetrometer, which is miniaturized in-situ penetration device, is applied for the evaluation of active layer depth distribution. As the application tests, two dynamic cone penetration tests were conducted on the study sites located in Solomon and Alaska. In addition, ground temperature variations were obtained. As the results of the application tests, the depth of interface between the active layer and the permafrost was evaluated from the difference in dynamic cone penetration indexes of the active layer and the permafrost, and a layer was detected around the interface considered as an ice lens layer. Also, the interface depths between the above zero and the below zero temperature determined from the ground temperature variations correspond with the interface depths evaluated from the dynamic cone penetration tests. This study demonstrates that the dynamic cone penetrometer may be a useful tool for the evaluation of the active layer in the extreme cold region.

Acknowledgement

Supported by : 한국연구재단

References

  1. ASTM D6951 (2009), Standard test method for use of the dynamic cone penetrometer in shallow pavement applications, Annual Book of ASTM Standard 04.03, ASTM International, West Conshohocken, PA, pp. 1-7.
  2. Chae, D. H., Kim, Y. S., Lee, J. G. and Cho, W. J. (2014), An experimental study on the creep behavior of frozen sand, Journal of the Korean Geo-Environmental Society, Vol. 15, No. 2, pp. 27-36 (in Korean). https://doi.org/10.14481/jkges.2014.15.2.27
  3. Gilpin, R. R. (1980), A model for the prediction of ice lensing and frost heave in soils, Water Resources Research, Vol. 16, No. 5, pp. 918-930. https://doi.org/10.1029/WR016i005p00918
  4. Guglielmin, M., Evans, C. J. E. and Cannone, N. (2008), Active layer thermal regime under different vegetation conditions in permafrost areas. A case study at Signy Island (Maritime Antarctica), Geoderma, Vol. 144, No. 1, pp. 73-85. https://doi.org/10.1016/j.geoderma.2007.10.010
  5. Hinzman, L. D., Kane, D. L., Gieck, R. E. and Everett, K. R. (1991), Hydrologic and thermal properties of the active layer in the Alaskan Arctic, Cold Regions Science and Technology, Vol. 19, No. 2, pp. 95-110. https://doi.org/10.1016/0165-232X(91)90001-W
  6. Kim, J. C., Lee, J. S., Hong, S. S. and Lee, C. H. (2014), Characteristics of shear strength and elastic waves in artificially frozen specimens using triaxial compression tests, The Korean Society of Engineering Geology, Vol. 24, No. 1, pp. 111-122 (in Korean).
  7. Kim, S. Y., Lee, J. S., Kim, Y. S. and Byun, Y. H. (2015), Evaluation of the shear strength and stiffness of frozen soil with a low water content, The Korean Society of Engineering Geology, Vol. 25, No. 1, pp. 93-102 (in Korean).
  8. Konrad, J. M. and Morgenstern, N. R. (1980), A mechanistic theory of ice lens formation in fine-grained soils, Canadian Geotechnical Journal, Vol. 17 No. 4, pp. 473-486.
  9. Loch, J. P. G. (1981), State of the art report - frost action in soils, Engineering Geology, Vol. 18, No. 1-4, pp. 213-224. https://doi.org/10.1016/0013-7952(81)90061-2
  10. Mohammadi, S. D., Nikoudel, M. R., Rahimi, H., and Khamehchiyan, M. (2008), Application of the dynamic cone penetrometer (DCP) for determination of the engineering parameters of sandy soils, Engineering Geology, Elsevier, Vol. 101, No. 3, pp. 195-203. https://doi.org/10.1016/j.enggeo.2008.05.006
  11. Nixon, J. F. (1991), Discrete ice lens theory for frost heave in soils, Canadian Geotechnical Journal, Vol. 28, No. 6, pp. 843-859. https://doi.org/10.1139/t91-102
  12. Osterkamp, T. E. and Payne, M. W. (1981), Estimates of permafrost thickness from well logs in northern Alaska, Cold Regions Science and Technology, Vol. 5, No. 1, pp. 13-27. https://doi.org/10.1016/0165-232X(81)90037-9
  13. Parameswaran, V. R. (1978), Adfreeze strength of frozen sand to model piles, Canadian geotechnical journal, Vol. 15, No. 4, pp. 494-500. https://doi.org/10.1139/t78-053
  14. Price, L. W. (1971), Vegetation, microtopography, and depth of active layer on different exposures in subarctic alpine tundra, Ecology, Vol. 52, No. 4, pp. 638-647. https://doi.org/10.2307/1934152
  15. Romanovsky, V. E. and Osterkamp, T. E. (1995), Interannual variations of the thermal regime of the active layer and nearsurface permafrost in northern Alaska, Permafrost and Periglacial Processes, Vol. 6, No. 4, pp. 313-335. https://doi.org/10.1002/ppp.3430060404
  16. Scala, A. J. (1956), Simple methods of flexible pavement design using cone penetrometers, New Zealand Engineering, Vol. 11, No. 2, pp. 1-34.
  17. Smith, T. (2007), Arctic dreams - a reality check., GEO ExPro, Vol. 4, No. 4, pp. 16-24.
  18. U. S. Army and Air force (1983), Arctic and subarctic construction foundation for structures, Department of The Army and The Air Force, pp. 1-7.
  19. Wang, Z. and Li, S. (1999), Detection of winter frost heaving of the active layer of Arctic permafrost using SAR differential interferogram, IGARSS'99 Proceedings, Vol. 4, pp. 1946-1948.
  20. Yoon, Y. W., Kim, S. E., Kang, B. H. and Kang D. S. (2003), Dynamic behavior of weathered granite soils after freezingthawing, Journal of Korean Geotechnical Society, Vol. 19, No. 5, pp. 69-78 (in Korean).