Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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Estimation for the Uniaxial Compressive Strength of Rocks in Korea using the Point Load Test

점하중시험을 이용한 국내 암석의 일축압축강도산정 연구

  • Kim, Hak Joon (Department of Construction Safety and Diaster Prevention, Daejeon University)
  • 김학준 (대전대학교 건설안전방재공학과)
  • Received : 2018.01.30
  • Accepted : 2018.02.13
  • Published : 2018.02.28
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Abstract

Accurate estimation of the uniaxial compressive strength of rock is very crucial for the safety of construction activities occurring in the rock mass. However, the uniaxial compressive strength test is expensive and time consuming. Moreover, the uniaxial compressive strength test cannot be performed in the field. In order to solve this kind of problem, many foreign researchers investigated the use of the point load strength test for the estimation of uniaxial compressive strength of rock. However, the result of research obtained for rocks from other countries may not be directly applicable for rocks in Korea. The correlation between the point load strength index and the uniaxial compressive strength for rocks in Korea is suggested in the form of table by using the results of the extensive literature reviews and laboratory tests. The suggested result is expected to be used for the simple and quick estimation of uniaxial compressive strength of rocks in Korea.

암반에서 공사를 수행하는 경우에는 공사의 안정성 확보를 위하여 대상 암반의 일축압축강도를 정확히 평가해야 한다. 그러나 일축압축강도를 산정하기 위해서는 많은 비용과 시간이 필요하다. 또한 현장에서는 암석의 일축압축강도시험을 수행할 수 없다는 문제점이 있다. 이러한 문제를 해결하기 위해 점하중강도 시험을 이용하여 암석의 일축압축강도를 산정하는 방법이 외국의 많은 연구자들에 의하여 조사되었다. 그러나 외국의 암석에서 얻어진 연구결과를 그대로 국내에서 적용하는 것은 신뢰성에 문제가 있을 수 있다. 본 연구에서는 국내 암석에 대한 점하중강도지수와 일축압축강도의 상관관계를 광범위한 국내 외 문헌조사와 실내시험 결과를 통하여 도표로 제시하였다. 본 연구결과는 국내 암석의 일축압축강도를 간편하고 신속하게 추정하는데 활용될 수 있을 것으로 기대된다.

Keywords

References

  1. Abbs, F.A., 1985, Use of the point load strength index in weak carbonate rocks, In: strength testing of marine sediments: Laboratory and in-situ measurements, American Society for Testing and Materials, Special Technical Publication 833, R. C. Chaney and K. R. Demars, Editors, 413-421.
  2. Agustawijaya, D.S., 2007, The uniaxial compressive strength of soft rock, Civil Engineering Dimension, Vol. 9, 9-14.
  3. Andrade, P.S. and Saraiva, A.A., 2010, Physical and mechanical characterization of phyllites and metagreywackes in central Portugal, Bulletin of Engineering Geology and the Environment, Vol. 69, 207-214.
  4. ASTM, 2016, Standard test method for determination of the point load strength index of rock and application to rock strength classifications, ASTM D5731-16, American Society for Testing Materials, West Conshohocken, Philadelphia.
  5. Azimian, A. and Ajalloeian, R., 2014, An empirical correlation of uniaxial compressive strength with P-wave velocity and point load strength index on marly rocks using statistical method, Geotechnical and Geological Engineering, Vol. 32, 205-214.
  6. Bae, D.S., Song, M.Y., and Kim, K.S., 1991, The anisotropic mechanical characteristics of the metamorphic rocks distributed in the Samkwang-Mine area, Cheongyang, Chungnam, The Journal of Engineering Geology, Vol. 1, 54-67.
  7. Baek, S.C., Kim, K.B., Lee, K.D., 1997, Evaluation of rock uniaxial compressive strength using point load strength index and shore scleroscope hardness, Proceedings of Korean Society of Engineering Geology, Spring conference, 31-39.
  8. Baek, S.C., Kim, Y.T., Kim, H.T., Yoon, J.S., Lee, Y.G., 2006, Evaluation of rock uniaxial compressive strength using ultrasonic velocity, Journal of Korean Geo-Environmental Society, Vol. 7, 33-42.
  9. Basu, A. and Aydin, 2006, Predicting uniaxial compressive strength by point load test: significance of cone penetration, Rock Mechanics and Rock Engineering, Vol. 39, 483-490.
  10. Basu, A. and Kamran, M., 2010, Point load test on schistose rocks and its applicability in predicting uniaxial compressive strength, International Journal of Rock Mechanics and Mining Sciences, Vol. 47, 823-828.
  11. Bell, F.G., 1995, Laboratory testing of rocks, In: Bell F.G. (ed), Engineering in rock masses, Butterworth-Heinemann, Oxford, 151-169.
  12. Bieniawski, Z.T., 1975, Point load test in geotechnical practice, Engineering Geology, Vol. 9, No. 1, 1-11. https://doi.org/10.1016/0013-7952(75)90024-1
  13. Bieniawski, Z.T., 1989, Engineering rock mass classifications, John Wiley & Sons, 251p.
  14. Broch, E. and Franklin, J.A., 1972, The point-load strength test, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, Vol. 9, No. 6, 669-697.
  15. Broch, E., 1983, Estimation of strength anisotropy using the point-load test, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, Vol. 20, 181-187.
  16. Brook, N., 1980, Size correction for point load testing, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, Vol. 17, 231-235.
  17. Brook, N., 1985, The equivalent core diameter method of size and shape correction in point load testing, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, Vol. 22, 61-70.
  18. Cai, M., 2010, Practical estimates of tensile strength and Hoek-Brown strength parameter mi of brittle rocks, Rock Mechanics and Rock Engineering, Vol. 43, 167-184.
  19. Cargill, J.S. and Shakoor, A., 1990, Evaluation of empirical methods for measuring the uniaxial compressive strength of rock, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, Vol. 27, 495-503.
  20. Carter, P.G. and Snedden, M., 1977, Comparison of Schmidt hammer, point load and unconfined compression tests in carboniferous strata, Proceedings of a Conference on Rock Engineering, University of New Castle, Tyne, England, 197-210.
  21. Cha, A.R, Song, J.H., Choi, H.S., and Chun, B.S., 2007, The study on the correlation between unconfined compressive strength and point load strength within the gneiss complex in Gyunggi Province, Journal of Korean Geo-Environmental Society, Vol. 8, 21-26.
  22. Chau, K.T. and Wong, R.H.C., 1996, Uniaxial compressive strength and point load strength of rocks, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, Vol. 33, No. 2, 183-188.
  23. Chung, H.S. and You, B.O., 1997, A study on variation of rock strength due to weathering and it's estimation, Jounrnal of the Korean Geotechnical Society, Vol. 13, 71-93.
  24. D'Andrea, D.V., Fisher, R.L., and Fogelson, D.E., 1964, Prediction of compression strength from other rock properties, Quarterly of the Colorado School of Mines, Vol. 59, No. 4b, 623-640.
  25. Das, B.M., 1985, Evaluation of the point load strength for soft rock classification, Proceedings of the Fourth International Conference on Ground Control in Mining, Morgantown, WV, 220-226.
  26. Diamantis, K., Gartzos, E., and Migiros, G., 2009, Study on uniaxial compressive strength, point load strength index, dynamic and physical properties of serpentinites from Central Greece: thest results and empirical relations, Engineering Geology, Vol. 108, 199-207.
  27. Elhakim, A.F., 2015, The use of point load test for Dubai weak calcareous sandstones, Journal of Rock Mechanics and Geotechnical Engineering, Vol. 7, 452-457.
  28. Eom, T.U., Kim, H.M., Kim, C.K., Jang, K.J., and Pyo, M.R., 2008, The weathering index and prediction of uniaxial compressive strength for Chung-Ju granite, Proceedings of Korean Geotechnical Society Conference, 863-874.
  29. Fener, M., Kahraman, S., Bilgil, A., and Gunaydin, O., 2005, A comparative evaluation of indirect methods to estimate the compressive strength of rocks, Rock Mechanics and Rock Engineering, Vol 38, No. 4, 329-343. https://doi.org/10.1007/s00603-005-0061-8
  30. Fereidooni, D., 2016, Determination of the geotechnical characteristics of hornfelsic rocks with a particular emphasis on the correlation between physical and mechanical properties, Rock Mechanics and Rock Engineering, Vol. 49, 2595-2608.
  31. Forster, I.R., 1983, The influence of core sample geometry on the axial point-load test, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, Vol. 20, 291-295.
  32. Ghosh, D.K. and Srivastava, M., 1991, Point-load strength: An index for classification of rock material, Bulletin of Engineering Geology and the Environment, Vol. 44, 27-33.
  33. Goodman, R. E., 1989, Introduction to rock mechanics, 2nd edition, John Wiley & Sons, 562p.
  34. Greminger, M., 1982, Experimental studies of the influence of rock anisotropy on size and shape effects in point-load testing, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, Vol. 19, 241-246.
  35. Gunsallus, K.L. and Kulhawy, F.H., 1984, A comparative evaluation of rock strength measures, International Journal of Rock Mechanics and Mining Sciences and Geomechanical Abstracts, Vol. 21, 233-248.
  36. Hassani, F.P., Scoble M.J., and Whittacker, B.N., 1980, Application of the point load strength index test to strength determination of rock and proposals for a new size correction chart, Proceedings of 21st US Symposium, Rock Mechanics, Rolla, 543-553.
  37. Hawkins, A.B., 1998, Aspects of rock strength, Bulletin of Engineering Geology and the Environment, Vol. 57, No. 1, 17-30. https://doi.org/10.1007/s100640050017
  38. Hawkins, A.B. and Olver, J.A.G., 1986, Point load tests: correlation factor and contractual use. An example from the Corallian at Weymouth, In: Hawkins A.B (ed) Site investigation practice: assessing BS 5930. Geological Society of London, 269-271.
  39. Heidari, M., Khanlari, G.R., Torabi Kaveh, M., and Kargarian, S., 2012a, Predicting the uniaxial compressive and tensile strengths of gypsum rock by point load testing, Rock Mechanics and Rock Engineering, Vol. 45, 265-273.
  40. Heidari, M., Khanlari, G.R., Torabi Kaveh, M., and Kargarian, S., 2012b, Reply to Discussion by Li and Wong on "Predicting the uniaxial compressive and tensile strengths of gypsum rock by point load testing" by Heidari et al., Rock Mechanics and Rock Engineering (2012) 45: 265-273, Rock Mechanics and Rock Engineering, Vol. 45, 1131-1135.
  41. Hoek, E., 1977, Rock mechanics laboratory testing in the context of a consulting engineering organization, International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, Vol.14, 93-101.
  42. Idris, M.A., Saiang, D., and Nordlund E., 2011, Numerical analyses of the effects of rock mass property variability on open stope stability, 45th US Rock Mechanics and Geomechanics Symposium, American Rock Mechanics Association, 1530-1540.
  43. Irfan, T.Y. and Dearman, W.R., 1978, Engineering classification and index properties of a weathered granite, Bulletin of the International Association of Engineering Geology, Vol. 17, 79-90.
  44. ISRM, 1981, Basic geotechnical description of rock masses, International Society for Rock Mechanics, International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts, Vol.18, 85-110.
  45. ISRM, 1985, Suggested method for determining point-load strength, International Society for Rock Mechanics, International Journal of Rock Mechanics and Mining Sciences, Vol. 22, No. 2, 53-60.
  46. Jermy C.A. and Bell, F.G., 1991, Coal bearing strata and the stability of coal mines in South Africa, Proceedings of the 7th International Congress on Rock Mechanics, International Society for Rock Mechanics, 1125-1131.
  47. Kahraman, S. and Gunaydin, O., 2009, The effect of rock classes on the relation between uniaxial compressive strength and point load strength index, Bulletin of Engineering Geology and the Environment, Vol. 68, 345-353.
  48. 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, 981-994.
  49. Kahraman, S., Gunaydin, O., and Fener, M., 2005, The effect of porosity on the relation between uniaxial compressive strength and point load strength index, International Journal of Rock Mechanics & Mining Sciences, Vol. 42, 584-589.
  50. Kang, S.S., Lee, H.J., Kang, C.W., and Kim, C.B., 2005, Physical and mechanical properties of volcanic glass in the Samho area, South Korea, Tunnel and Underground Space, Korean Society for Rock Mechanics, Vol. 15, No. 3, 223-227.
  51. Karaman, K., Kaya, A., and Kesimal, A., 2015, Use of the point load strength index in estimation of the strength rating for the RMR system, Journal of African Earth Sciences, Vol. 106, 40-49.
  52. Kaya, A. and Karaman, K., 2016, Utilizing the strength conversion factor in the estimation of uniaxial compressive strength from the point load strength index, Bulletin of Engineering Geology and the Environment, Vol. 75, 341-357.
  53. Kim, G.M., Kim, D.H., Kang, J. S., Kang, S. S., and Baek, H., 2012, A study on the correlation between uniaxial compressive strength and point load strength index of limestone of Imgye area, Tunnel and Underground Space, Korean Society for Rock Mechanics, Vol. 22, No. 5, 330-338 (in Korean). https://doi.org/10.7474/TUS.2012.22.5.330
  54. Kim, H.G., Koh, Y.K., and Oh, K.H., 2004, A study on the mechanical properties of the cretaceous tuffs in Goheung area, The Journal of Engineering Geology, Vol. 14, No. 3, 273-285.
  55. Kim, J.H., Choi, S.Y., Kim, K.S., and Park, Y.J., 2008, Characteristics of the point load strength index considering the foliation of gneiss, Proceedings of the Korean Society for Rock Mechanics Conference, 137-143.
  56. Kim, M.K., 2015, The mechanical properties of the Geochang granite, Tunnel and Underground Space, Korean Society for Rock Mechanics, Vol. 25, 24-36.
  57. Kim, Y.S. and Seo, I. S., Heo, N.Y., Lee, J.H., and Kim, B.T. 2001, Engineering characteristics of shales due to the angle of bedding planes, Jounrnal of the Korean Geotechnical Society, Vol. 17, 5-13 (in Korean).
  58. Kohno, M. and Maeda, H., 2012, Relationship between point load strength index and uniaxial compressive strength of hydrothermally altered soft rocks, International Journal of Rock Mechanics and Mining Sciences, Vol. 50, 147-157.
  59. Koncagül, E.C. and Santi, P.M., 1999, Predicting the unconfined compressive strength of the Breathitt shale using slake durability, Shore hardness and rock structural properties, International Journal of Rock Mechanics and Mining Sciences, Vol. 36, 139-153.
  60. KSRM, 2005, Standard test method for uniaxial compressive strength of rock, Tunnel and Underground Space, Korean Society for Rock Mechanics, Vol. 15, No. 2, 85-86 (in Korean).
  61. KSRM, 2007, Standard test method for point load strength of rock, Tunnel and Underground Space, Korean Society for Rock Mechanics, Vol. 17, No. 2, 75-82 (in Korean).
  62. Kulhawy, F.H. and Prakoso, W.A., 2001. Foundations in carbonate rocks and karst, In: Brandon T.L. editor, Foundations and Ground Improvement, American Society of Civil Engineers, 1-15.
  63. Kwag, S.M., Jung, Y.W., and Kim, G.W., 2013, Engineering properties of red shale and black shale of the Daegu area, Korea, The Journal of Engineering Geology, Vol. 23, 341-352.
  64. Kwon, S.H., 2012, Application of point load strength test to the Korean gneiss, M.Eng. Thesis, Department of Civil and Environmental Engineering, Ulsan University, 25p.
  65. Lashkaripour, G.R., 2002, Predicting mechanical properties of mudrock from index parameters, Bulletin of Engineering Geology and the Environment, Vol. 61, 73-77.
  66. Lee, J.G., Jang, S.M., Lee, S.G., and Sohn, G.C., 2003, A study on strength anisotropy characteristic and suggested methods for determining RQD as for shale, Proceedings of the Korean Society for Rock Mechanics Conference, 173-180.
  67. Lee, M.S., Kim, M.I., Baek, J.N., and Han, B.K., 2011, Calculating the uniaxial compressive strength of granite from Gangwon Province using linear regression analysis, The Journal of Engineering Geology, Vol. 21, 361-367.
  68. Lee, S.G. and Lee, S., 1995, A suggested method to predict uniaxial compressive strength of Korean Granites by point load strength, KSCE Journal of Civil Engineering, Vol. 15, 1015-1027 (in Korean).
  69. Lee, Y.H, Kim, Y.J., and Park, J.K., 2000, Engineering characteristics of the sedimentary rocks on compressive strength and weathering grade, Jounrnal of the Korean Geotechnical Society, Vol. 16, 5-17.
  70. Lee, Y.H. and Youn, C.H., 2009, The point load strength index of the Daegu shale and its relation to the uniaxial compressive strength, Journal of Korean Geo-Environmental Society, Vol. 10, 37-45.
  71. Min, T.K. and Moon, J.K., 2006, A review of strength estimation method on Ulsan sedimentary rocks, Journal of the Korean Geotechnical Society, Vol. 22, 63-75.
  72. Min, T.K. and Moon, J.K., and Ro, J.S., 2008, Predicting uniaxial compressive strength and elastic modulus using Brazilian test, Jounrnal of the Korean Geotechnical Society, Vol. 24, 131-146.
  73. Nuri, T.M, Ali, A.N.Y., and Ahmed, S., 2012, Correlation study between point load test and uniaxial compressive strength and tensile strength of some sedimentary rocks in Mosul City, Engineering & Technology Journal, Vol. 30, No. 1, 155-166
  74. O'Rourke, J.E., 1989, Rock index properties for geo- engineering in underground development, Mining Engineering, Vol. 41, 107-110.
  75. Palchik, V. and Hatzor, Y.H., 2004, The influence of porosity on tensile and compressive strength of porous chalk, Rock Mechanics and Rock Engineering, Vol. 37, No. 4, 331-341. https://doi.org/10.1007/s00603-003-0020-1
  76. Pells, P.J.N., 1975, The use of point load test in predicting the compressive strength of rock material, Australian Geomechanics Journal, Vol. 5(N1), 54-56.
  77. Quane, S.L. and Russell, J.K., 2003, Rock strength as a metric of welding intensity in pyroclastic deposits, European Journal of Mineralogy, Vol. 15, 855-864.
  78. Read, J.R.L., Thornten P.N., Regan W.M., 1980, A rational approach to the point load test, Proceedings of Austria-New Zealand Geomechanics, Vol. 2, 35-39.
  79. Rusnak, J.A. and Mark, C., 1999, Using the point load test to determine the uniaxial compressive strength of coal measure rock, Proceedings of 19th International Conference on Ground Control in Mining, 362-371.
  80. Sabatakakis, N., Koukis, G., Tsiambaos, G., and Papanakli, S., 2008, Index properties and strength variation controlled by microstructure for sedimentary rocks, Engineering Geology, Vol. 97, 80-90.
  81. Sheorey, P.R., 1997, Empirical rock failure criteria, A.A. Balkema, Rotterdam, 176p.
  82. Sheraz, A.M., Emad, M.Z., Shahzad, M., and Arshad, S.M., 2014, Relation between uniaxial compressive strength, point load strength index and sonic wave velocity for dolerite, Pakistan Journal of Science, Vol. 66, 60-66.
  83. Singh, T.N., Ashutosh K., and Venkatesh, A., 2012, Correlation between point load strength index and uniaxial compressive strength for different rock types, Rock Mechanics and Rock Engineering, Vol. 45, No. 2, 259-264. https://doi.org/10.1007/s00603-011-0192-z
  84. Singh, V.K. and Singh, D.P., 1993, Correlation between point load strength index and compressive strength for quartzite rocks, Geotechnical and Geological Engineering, Vol. 11, 269-272.
  85. Smith, H.J, 1997, The point load test for weak rock in dredging applications, International Journal of Rock Mechanics and Mining Sciences, Vol. 34, No. 3-4, pp. 295.e1-295.e13. https://doi.org/10.1016/S1365-1609(97)00063-4
  86. Tsiambaos, G. and Sabatakakis, N., 2004, Considerations on strength of intact sedimentary rocks, Engineering Geology, Vol. 72, 261-273.
  87. Tugrul, A. and Zarif, I.H., 1999, Correlation of mineralogical and textural characteristics with engineering properties of selected granitic rocks from Turkey, Engineering Geology, Vol. 51, 303-317.
  88. Türk, N. and Dearman, W.R., 1985, Improvements in the determining point-load strength, Bulletin of the International Association of Engineering Geology, Vol. 31, 137-142.
  89. Tziallas, G.P., Tsiambaos, G., Saroglou, H., 2009, Determination of rock strength and deformability of intact rocks, The Electronic Journal of Geotechnical Engineering, Vol. 14, 1-12.
  90. Ulusay R., Tureli, K., and Ider, M.H., 1994, Prediction of engineering properties of a selected litharenite sandstone from its petrographic characteristics using correlation and multivariate statistical techniques, Engineering Geology, Vol. 37, 135-157.
  91. Vallejo, L.E., Walsh, R.A., and Robinson, M.K., 1989, Correlation between unconfined compressive and point load strength for appalachian rocks, Proceedings of the 30th US Symposium on Rock Mechanics, 461-468.
  92. Wilson, L.C., 1976, Tests of bored and driven piles in Cretaceous mudstone at Port Elizabeth, South Africa, Geotechnique, Vol. 26, No. 1, 5-12. https://doi.org/10.1680/geot.1976.26.1.5
  93. Woo, B.S., 2005, Evaluation of uniaxial compressive strength by point load test and hardness test, M.Sc. Thesis, Department of Civil and Environmental Engineering, Andong National University, 55p.
  94. Woo, I., 2014, Correlation between the point-load strength and the uniaxial compressive strength of Korean granites, The Journal of Engineering Geology, Vol. 24, 101-110.
  95. Yilmaz, I., 2009, A new testing method for indirect determination of the unconfined compressive strength of rocks, International Journal of Rock Mechanics and Mining Sciences, Vol. 46, 1349-1357.