Journal of the Korean Geotechnical Society (한국지반공학회논문집)

Korean Geotechnical Society (한국지반공학회)
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A Prediction of Engineering Properties of Ulsan Sedimentary Rocks with Schmidt Hammer Rebound Number

Schmidt hammer 반발지수로 울산지역 퇴적암의 공학적 특성을 추정하기 위한 연구

  • 민덕기 (울산대학교 공과대학 건설환경공학부) ;
  • 문종규 (동명기술단㈜)
  • Published : 2006.10.31
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Abstract

A study has been made of the Schmidt hammer rebound test for the estimation of engineering and physical characteristics of sedimentary rocks. As there is no universal formular for the estimation of rock strength due to geological conditions, in this study only sedimentary rocks are adopted to testing. The aim of study is to make the information more meaningful and useful for engineers and contractors by providing rapid, cheap and easy method. The obtained parameters were correlated and regression equations were established among Schmidt hammer rebound number, uniaxial compressive strength, tangent Young's modulus, indirect tensile stress, water absorption and porosity of rocks with high coefficients of correlation with each other.

울산분지 퇴적암을 대상으로 Schmidt hammer 타격시험을 시행하여 일축 압축강도, 압열 인장강도, 탄성계수, 흡수율 및 간극율과의 상호 관계를 구명하였다. 기 연구된 결과는 여러 암종이 혼합된 결과로 실용적 적용에 어려움이 있어 지질학적 생성배경의 차이로 인한 원인을 배제하고 실용적 적용에 유용하도록 울산분지 퇴적암만을 대상으로 하여 연구를 시행하였다. Schmidt 햄머 반발지수와 각 실험결과상호간에 높은 상관성이 있으며 본 연구 결과 값으로 상호 교차검정을 한 결과도 만족할 수 있는 결과가 도출되었다.

Keywords

References

  1. 정형식, 유병옥 (1997), '암석의 풍화에 따른 강도 변화특성 및 강도추정에 관한 연구', 한국지반 공학회 논문집, 제13권, 제6호, pp.71-91
  2. 이영남, 윤지선, 김두영 (1993), 'Rock Test Hammer 측정결과의 활용에 관하여', 한국암반역학회, 터널과 지하공간, Vol.3, pp.167-174
  3. 이수곤, 이송 (1995), '슈미트 해머 수치를 이용한 한국 화강암의 일축 압축강도 추정방법', 대한토목학회 논문집, 제15권, 제2호, pp.199-210
  4. 이영휘, 김용준, 박준규 (2000), '압축 강도와 풍화도에 관련된 퇴적암의 공학적 특성', 한국지반공학회 논문집, 제16권, 제1호, pp.5-17
  5. 임성빈, 김교원, 서용석 (2005), '대구지역 퇴적암의 일축 압축강도 예측을 위한 인공신경망 적용', The Journal of Engineering Geology, Vol.15, No.1, pp.67-76
  6. ASTM (D 2938-95), 'Standard test method for unconfined compressive strength of intact rock core specimens', Annual Book of ASTM Standards 2005
  7. ASTM (D 4543-01), 'Practices for preparing rock core specimens and determining dimensional and shape tolerances', Annual Book of ASTM Standards 2005
  8. ASTM (D 3148-96), 'Test method for elastic moduli of intact rock core specimens in uniaxial compression', Annual Book of ASTM Standards 2005
  9. ASTM (D 3967-95a), 'Standard test method for splitting tensile strength of intact rock core specimens', Annual Book of ASTM Standards 2005
  10. ASTM (D 5873-00), 'Test method for determination of rock hardness by rebound hammer method', Annual Book of ASTM Standards 2005
  11. ASTM (D 854-00), 'Test method for specific gravity of soils', Annual Book of ASTM Standards 2005
  12. ASTM (D 2216-98), 'Test method for laboratory determination of water (moisture) content of soil and rock by mass', Annual Book of ASTM Standards 2005
  13. Aufmuth, R.E. (1974), 'A systematic determination of engineering criteria for rock', Bull. Ass. Eng. Geol., Vol.6, No.3, pp.235-245
  14. Aydin, A., Basu, A. (2005), 'The Schmidt hammer in rock-material characterization', Eng. Geol., Vol. 81, pp.1-14 https://doi.org/10.1016/j.enggeo.2005.06.006
  15. Beverly, B.E., Schoenwolf, D.A., Brierly, G.S. (1979), 'Correlations of rock index values with engineering properties and the classification of intact rock'
  16. Barton, N., Choubey, V. (1977), 'The shear strength of rock joints in theory and practice', Rock Mech., Vol.10, pp.1-54 https://doi.org/10.1007/BF01261801
  17. Cargill, J.S., Shakoor, A. (1990), 'Evaluation of empirical methods for measuring the uniaxial compressive strength', Int. J. Rock Mech. Min. Sci., Vol.27, pp.495-503 https://doi.org/10.1016/0148-9062(90)91001-N
  18. Dearman, W.R., Irfan, T.Y. (1978), 'Assessment of the degree of weathering in granite using petrographic and physical index tests', Proc. Int. Symp. on Deterioration and Protection of Stone Monuments. UNESCO, Paris, pp.1-35, Paper 2, 3
  19. Deere, D.U., Miller, R.P. (1966), 'Engineering classification and index properties for intact rocks', Tech. Report, Air Force Weapons Lab. New Mexico, No. AFNL-TR. Kirtland., pp.65-116
  20. Day, M.J., Goudie, A.S. (1977), 'Field assessment of rock hardness using the Schmidt test hammer', Br. Geomorphol Res. Group Tech. Bull, Vol.18, pp.19-29
  21. Duncan, N. (1969), 'Engineering Geology and rock mechanics', London. Leonard Hill, Vol. 1
  22. Fowell, R.J., McFeat Smith, I. (1976), 'Factors influencing the cutting performance of a selective tunnelling machine', In Jones, J.M. editor. Proceedings of the International Sympogium on Tunnelling '76, London: IMM; pp.301-309
  23. Goktan, R.M., Gunes, N. (2005), 'A comparative study of Schmidt hammer testing procedures with reference to rock cutting machine performance prediction', Int. J. Rock Mech. and Min. Sci., Vol.42, pp.466-472 https://doi.org/10.1016/j.ijrmms.2004.12.002
  24. Haramy, K.Y., DeMarco, M.J. (1985), 'Use of Schmidt hammer for rock and coal testing', Proc. 26th. U. S. Symp. Rock Mech., pp.549-555
  25. Hucka, V. (1965), 'A rapid method for determining the strength of rocks in situ', Int. J. Rock Mech. Min. Sci. Geomech. Abstr., Vol.2, pp.127-134 https://doi.org/10.1016/0148-9062(65)90009-4
  26. ISRM (1978a), 'Suggested methods for determining hardness and abrasiveness of rocks', Int. J. Rock Mech. Min. Sci. Geomech. Abstr., Vol.15, pp.89-97 https://doi.org/10.1016/0148-9062(78)90002-5
  27. ISRM (1979), 'Suggested methods for determining water content, porosity, density, absorption and related properties and swelling and slake-durability index properties', Int. J. Rock Mech. Min. Sci. Geomech. Abstr., Vol.16, pp.141-156
  28. ISRM (1979), 'Suggested methods for determining the uniaxial compressive strength and deformability of rock materials', Int. J. Rock Mech. Min. Sci. Geomech. Abstr., Vol.16 (2), pp.135-140
  29. Kahraman, S. (2001), 'Evaluation of simple methods for assessing the uniaxial compressive strength of rock', Int. J. Rock Mech. Min. Sci., Vol.38, pp.981-994 https://doi.org/10.1016/S1365-1609(01)00039-9
  30. Karpuz, C. (1990), 'A classification system for excavation of surface coal measures', Min. Sci. Technol., Vol.11, pp.157-163 https://doi.org/10.1016/0167-9031(90)90303-A
  31. Katz, O., Reches, Z., Reogiers, J.C. (2000), 'Evaluation of mechanical rock properties using a Schmidt hammer', Int. J. Rock Mech. Min. Sci., Vol.37, pp.723-728 https://doi.org/10.1016/S1365-1609(00)00004-6
  32. Kazi, A., Al-Mansour, Z.R. (1980), 'Empirical relationship between Los Angeles Abrasion and Schmidt hammer strength tests with application to aggregates around Jeddah', Q. J .Eng. Geol., London, Vol.13, pp.45-52 https://doi.org/10.1144/GSL.QJEG.1980.013.01.03
  33. Kidybinski, A. (1980), 'Method of investigations, estimation and classification of roofs in mines in the United States of America for the selection of suitable mechanized support for long-walls', USDI/CMI Joint Research Project Report
  34. Poole, R.W., Farmer, I.W. (1978), 'Geotechnical factors affecting tunnelling machine performance in coal measures rocks', Tunnels Tunnelling, pp.27-30
  35. Poole, R.W., Farmer, I.W. (1980), 'Consistency and repeatability of Schmidt hammer rebound data during field testing', Int. J. Rock Mech. Min. Sci. & Geomech. Abstr., Vol.17, pp.167-171 https://doi.org/10.1016/0148-9062(80)91363-7
  36. Schmidt, E. (1951), 'A non-destructive concrete tester', Concrete, Vol.59, No.8, pp.34-35
  37. Shorey, P.R., Barat, D., Das, M.N., Mukherjee, K.P., Singh, B. (1984), 'Schmidt hammer rebound data for estimation of large scale in situ coal strength', Int. J. Rock Mech. Min. Sci. & Geomech. Abstr., Vol.21, pp.39-42 https://doi.org/10.1016/0148-9062(84)90008-1
  38. Singh, R.N., Hassani, F.P., Elkington, P.A.S. (1983), 'The application of strength and deformation index testing to the stability assessment of coal measures excavations', Proc. 24th. US Symp. on Rock Mech., Taxas A & M Univ., AEG, pp.599-609
  39. Yasar, E., Erogan, Y. (2004), 'Estimation of rock physicochemical properties using hardness methods', Eng. Geol., Vol.71, pp.281-288 https://doi.org/10.1016/S0013-7952(03)00141-8
  40. Yilmaz, L., Sendir, H. (2002), 'Correlation of Schmidt hardness with unconfined compressive strength and Young's modulus in gypsum from Sivas (Turkey)', Eng. Geol., Vol.66, pp.211-210 https://doi.org/10.1016/S0013-7952(02)00041-8
  41. Xu, S., Grasso, P., Mahtab. (1990), 'Use of Schmidt hammer for estimating mechanical properties of weak rock', Proc. 6th. Int. IAEG Cogress, Vol.1, pp.511-519
  42. Young, R.P., Fowell, R.J. (1978), 'Assessing rock discontinuities', Tunnels Tunnelling, pp.45-48