Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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Simplified Estimation of the Cohesion and Internal Friction Angle of Volcanic Intact Rocks in Jeju Island Using Uniaxial Compressive Strength and/or Brazilian Tensile Strength

일축압축강도·압열인장강도를 이용한 제주도 화산암의 점착력과 내부마찰각의 간이추정

  • Yang, Soonbo (Port and Airport Research Institute, National Institute of Maritime, Port and Aviation Technology)
  • 양순보 (일본 국립연구개발법인 해상.항만.항공기술연구소 항만공항기술연구소)
  • Received : 2022.04.07
  • Accepted : 2022.08.11
  • Published : 2022.10.31
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Abstract

In this study, to propose simplified methods for estimating the cohesion and internal friction angle of volcanic rocks in Jeju Island using uniaxial compressive strength and/or Brazilian tensile strength, the estimated values of cohesion and internal friction angle from triaxial and uniaxial compression tests and Brazilian tests were compared in terms of estimation accuracy. This study proposed simplified methods for estimating the cohesion and internal friction angle using the uniaxial compressive strength and/or Brazilian tensile strength of volcanic rocks in Jeju Island. According to the findings, among the proposed simplified methods, the method using uniaxil compressive strength was most desirable to accurately estimate the cohesion and internal friction angle of volcanic intact rocks in Jeju Island.

본 연구에서는, 제주도 화산암의 일축압축강도·압열인장강도를 이용하여 점착력과 내부마찰각을 간편하게 추정하기 위한 방법을 제안하기 위하여, 제주도 화산암석에 대한 삼축압축시험, 일축압축시험 및 압열인장시험의 결과로부터 각각 산정된 점착력 및 내부마찰각을 서로 비교·분석하였으며, 퍼센트 오차 평균값을 이용하여 그 추정 정도를 살펴보았다. 그 결과, 제주도 화산암의 일축압축강도·압열인장강도를 이용한 점착력과 내부마찰각의 다양한 간이 추정법을 제안할 수 있었으며, 제안된 방법 중에서 삼축압축시험 결과로부터 산정된 점착력 및 내부마찰각에 가까운, 다시 말해서 정도가 높은 값을 추정하기 위해서는, 일축압축강도를 이용하여 추정하는 방법이 가장 바람직하다는 것을 알 수 있었다.

Keywords

References

  1. Aladejare, A.E., Alofe, E.D., Onifade, M., Lawal, A.I., Ozoji, T.M., and Zhang Z.X. (2021), "Empirical Estimation of Uniaxial Compressive Strength of Rock: Database of Simple, Multiple and Artificial Intelligence-based Regressions", Geotechnical and Geological Engineering, Vol.39, pp.4427-4455. https://doi.org/10.1007/s10706-021-01772-5
  2. Cho, T.C., Lee, S.B., Hwang, T.J., and Won, K.S. (2009), "Variations of Mechanical Properties of Hallasan Trachyte with Respect to the Degree of Weathering", Tunnel and Underground Space, Vol.19, No.4, pp.287-303.
  3. Bieniawski, Z.T. (1974), "Estimating the Strength of Rock Materials", Journal of the South African Institute of Mining and Metallurgy, Vol.74, pp.312-320.
  4. Brisevac, Z., Hrzenjak, P., and Buljan, R. (2016), "Models for Estimating Uniaxial Compressive Strength and Elastic Modulus", GRADEVINAR, Vol.68, pp.19-28.
  5. Chang, C., Zoback, M.D., and Khaksar, A. (2006), "Empirical Relations between Rock Strength and Physical Properties in Sedimentary Rocks", Journal of Petroleum Science and Engineering, Vol.51, pp.223-237. https://doi.org/10.1016/j.petrol.2006.01.003
  6. Eum, K.Y. (2002), Study on the Mechanical Properties of Volcanic Rocks in Chejudo, Master thesis, Yonsei University, 63p.
  7. Hoek, E. (2007), Practical rock engineering, http://www.rocscience.com, 342p.
  8. Jaeger, J.C., Cook, N.G.W., and Zimmerman, R.W. (2007), Fundamentals of Rock Mechanics, Blackwell Publishing, pp.158-160.
  9. Kahraman, S. (2001), "Evaluation of Simple Methods for Assessing the Uniaxial Compressive Strength of Rock", International Journal of Rock Mechanics and Mining Sciences, Vol.38, pp.981-994. https://doi.org/10.1016/S1365-1609(01)00039-9
  10. Kim, H.J. (2018), "Estimation for the Uniaxial Compressive Strength of Rocks in Korea Using the Point Load Test", Tunnel and Underground Space, Vol.28, No.1, pp.72-96. https://doi.org/10.7474/TUS.2018.28.1.072
  11. Kim, J.H. (2007), A Study on the Mechanical Characteristics and the Strength in Pyoseonri Basalt, Master thesis, Jeju National University, 93p.
  12. Kim, Y.K. and Choi, O.G. (1991), "Engineering Geological Characteristics of Volcanic Rocks of the Northwestern Cheju Island, Korea", The Journal of Engineering Geology, Vol.1, No.1, pp.19-37.
  13. Moon, K., Park, S., Kim, Y., and Yang, S. (2014), "Mechanical Characteristics of Basalt in Jeju Island with Relation to Porosity", Journal of the Korean Society of Civil Engineers, Vol.34, No.4, pp.1215-1225. https://doi.org/10.12652/Ksce.2014.34.4.1215
  14. Moon, K. and Yang, S. (2020), "Cohesion and Internal Friction Angle Estimated from Brazilian Tensile Strength and Unconfined Compressive Strength of Volcanic Rocks in Jeju Island", Journal of the Korean Geotechnical Society, Vol.36, No.2, pp.17-28. https://doi.org/10.7843/KGS.2020.36.2.17
  15. Nam, J.M., Yun, J.M., Song, Y.S., and Kim, J.H. (2008a), "Analysis of Engineering Properties to Basalt in Cheju Island", Journal of the Korean Geosynthetics Society, Vol.7, No.1, pp.12-21.
  16. Nam, J.M., Yun, J.M., Song, Y.S., and Kim, J.H. (2008b), "Analysis of Influence Factors to Compressive and Tensile Strength of Basalt in Cheju Island", The Journal of Engineering Geology, Vol.18, No.2, pp.215-225.
  17. Nam, J.M., Yun, J.M., and Song, Y.S. (2009), "Estimation to the Strength of Basalt in Jeju Island according to Rock Failure Criterions", The Journal of Engineering Geology, Vol.19, No.2, pp.153-163.
  18. Park, S. and Moon, K. (2020), "Mechanical Characteristics of Basalt in Jeju Island with Relation to Moisture Condition", Journal of the Korean Geotechnical Society, Vol.36, No.7, pp.29-40. https://doi.org/10.7843/KGS.2020.36.7.29
  19. Piratheepan, J., Gnanendran, C. T., and Arulrajah, A. (2012), "Determination of c and ϕ from an IDT and Unconfined Compression Testing and Numerical Analysis", Journal of Materials in Civil Engineering, Vol.24, No.9, pp.1153-1163. https://doi.org/10.1061/(ASCE)MT.1943-5533.0000493
  20. Thuro, K., Plinninger, R.J., Zah, S., and Schutz, S. (2001), "Scale Effects in Rock Strength Properties. Part 1: Unconfined Compressive Test and Brazilian Test", ISRM Regional Symposium EUROCK 2001, pp.169-174.
  21. Yang, S. (2014), "Comparative Study on Physical and Mechanical Characteristics of Volcanic Rocks in Jeju Island", Journal of the Korean Geotechnical Society, Vol.30, No.11, pp.39-49. https://doi.org/10.7843/KGS.2014.30.11.39
  22. Yang, S. (2015a), "Physical and Mechanical Characteristics of Basalts in Northwestern and Southeastern Jeju Island", Journal of the Korean Geotechnical Society, Vol.31, No.7, pp.41-52. https://doi.org/10.7843/KGS.2015.31.7.41
  23. Yang, S. (2015b), "Cohesion and Internal Friction Angle of Basalts in Jeju Island", Journal of the Korean Geotechnical Society, Vol.31, No.11, pp.33-40. https://doi.org/10.7843/KGS.2015.31.11.33
  24. Yang, S. (2016), "Strength Parameters of Basalts in Jeju Island according to Rock Failure Criterions", Journal of the Korean Geotechnical Society, Vol.32, No.3, pp.15-27. https://doi.org/10.7843/KGS.2016.32.3.15
  25. Yang, S. and Sassa, S. (2016), "Mechanical Characteristics and Design Strength Parameters due to Vesicular Property of Basalts", Journal of Japan Society of Civil Engineers, Ser. B3, Vol.72, No.2, pp.437-442.
  26. Yang, S. and Sassa, S. (2017), "Effects of Porosity on Mechanical Characteristics of Vesicular Basalts", Proceedings of the 27th International Ocean and Polar Engineering Conference, pp.705-711.
  27. Yang, S. and Boo, S.P. (2019), "Estimation of Deformation Modulus of Basaltic Rock Masses in Northeastern and Northwestern Jeju Island", Journal of the Korean Geotechnical Society, Vol.35, No.1, pp.5-15. https://doi.org/10.7843/KGS.2019.35.1.5
  28. Yang, S. (2020), "Estimation of Hoek-Brown Constant mi for the Basaltic Intact Rocks in Jeju Island", Journal of the Korean Geotechnical Society, Vol.36, No.10, pp.21-31. https://doi.org/10.7843/KGS.2020.36.10.21
  29. Yu, Y., Yin, J., and Zhong, Z. (2006), "Shape effects in the Brazilian Tensile Strength Test and a 3D FEM Correction", International Journal of Rock Mechanics and Mining Sciences, Vol.43, pp.623-627. https://doi.org/10.1016/j.ijrmms.2005.09.005
  30. Zhang, L. (2010), "Estimating the Strength of Jointed Rock Masses", Rock Mechanics and Rock Engineering, Vol.43, pp.391-402. https://doi.org/10.1007/s00603-009-0065-x