Comparison of Input Data for Numerical Analysis of Rock Structures

암반구조물의 수치해석을 위한 입력자료지 비교분석

  • 장명환 (대한공업진흥공사 석재자원처 석재조사담당) ;
  • 양형식 (전남대학교 자원공학과)
  • Published : 1999.09.01

Abstract

Parameters of failure criteria, compressive strength and elastic modulus are most important for design and stability analysis of rock structure using numerical analysis. In this study, it suggests that the application of input data for numerical analysis by the literature study and the result of the 150 sets of triaxial compressive test. There was much different between parameters of failure criterion suggested by Hoek-Brown and parameters resulted from the analysis using 150 sets of triaxial compressive test. But the converting equations of compressive strength have had an interrelation with RMR. However, the converting of elastic of elastic modulus were different as chosen of equation, and the equation by Nicholson et at was more useful than others.

수치모델링을 통한 암반구조물 설계 및 안정성 평가에서 가장중요한 것은 현지암반의 파괴조건계수, 압축강도, 탄성계수 등이다. 본 연구에서는 기 연구된 문헌들과 150 set의 삼축압축자료들을 비교분석함으로써 입력자료의 적용성을 제안하였다. Hoek-Brown이 제시한 신선암의 암종별 파괴조건계수와 삼축실험자료의 분석에 의한 파괴조건계수 사이에는 많은 차이가 있었다. 그러나, 압축강도의 변환식들은 RMR에 따라 모두 유사한 거동을 보여 주었다. 한편, 탄성계수의 변환식들은 식의 선택에 따라 많은 차이가 나는 것으로 분석되었으나, Nicholson 등의 제안식이 각 사례들과 대비하여 더 현실적인 것으로 분석 되었다.

Keywords

References

  1. Rock Mechanics and Rock Engineering v.16 Back analysis of measured displacements of tunnels Sakurai, S.;Takeuchi
  2. Empirical Rock Failure Criteria Sheorey, P. R.
  3. 한국자원공학회지 v.29 국내 주요암석의 파괴조건계수 연구 양형식
  4. 한국지반공학회지 v.14 암석의 파괴조건계수 평가 및 적용성에 관한 연구 장명환;양형식
  5. Proc. 15th Can. Rock Mech. Symp. The Hoek-Brown Failure Criterion-a 1988 Update Hoek, E.;E. T. Brown
  6. Proc. Int. Symp. Eng. Geol. Under-ground Constr. v.1 no.II Consi-derations of the Geomechanics Classfication of Bieniawski Serafim, J.L.;J.P. Pereira
  7. Ph. D. Thesis, University of Wales Cardiff An evaluation of strata support techniques in dual life gateroads Trueman, R.
  8. Private communi-cation Trunk, U.;K. Honisch
  9. Int. J. Rock Mech. Min. Sci. v.34 The relation Between In-situ and Laboratory Rock Properties Used in Numerical Modelling Mohammad, D. J.;Reddish;L. R. Stace
  10. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr. v.27 Estimating Mohr-Coulomb Friction and Cohesion Values from the Hoek-Brown Failure Criterion Hoek, E.
  11. proc. 4th Int. Congr. Rock Mech. v.2 The Geomechanics Classfication in Rock Engineering Applications Bieniawski, Z. T.
  12. Indian Geotech. J. v.16 Stability of Rock Mass, Eighth Indian Geotech. Soc. Annual Lecture Rammamurthy, T.
  13. 5th. Int. Cong. Rock Mech.(ISRM) v.1 An empirical failure criterion for rock masses Yudhbir, W. Lemanza;F. Prinzl
  14. Eng. Geol. v.26 An empirical failure criterion for rocks and jointed rock masses Sheorey, P.R.;A.K. Biswas;V.D. Choubey
  15. Swedish Rock Engineering Research Foundation Publication, No. 307 FEM Analysis of Rock Mechanics Problems by JOBFEM Stille, H.;T. Groth;Fredriksson
  16. Int. J. Rock Mech., Min. Sci. v.15 Determining Rock Mass Deformability: Experience from Case Histories Bieniawski, Z. T.
  17. Int. J. Min. & Geological Engng v.8 A nonlinear deformation modulus based on rock mass classfication Nicholson, G. A.;Z. T. Bieniawski
  18. SME Annual Meeting Finite element modelling of cable-bolted stopes in hard rock underground mines Mitri, H. S.;R. Edrissi;J. Henning