Browse > Article

Numerical Analysis of Deformation Behaviour of Underground Opening in a Discontinuous Rock Mass Using a Continuum Joint Model  

Kang Sang Soo (Geotechnical Engineering Division, Korea Institute of Geosicience and Mineral Resources)
Lee Jong-Kil (Geotechnical Division, Soosung Engineering)
Baek Hwanjo (Division of Geosystem and Environmental Engineering Kangwon National University)
Publication Information
The Journal of Engineering Geology / v.15, no.3, 2005 , pp. 257-268 More about this Journal
Abstract
In situ rock mass is generally heterogeneous and discontinuous, with varying degrees of strength along the planes of weakness. The planes of weakness such as joints, faults, cracks and bedding planes, control the strength and deformation characteristics of the rock mass. Subsequently, the stability of underground opening depends upon the spatial distribution of discontinuities and their mechanical properties in relation with geometrical shape of openins as well as the mechanical properties of intact rock materials. Understanding the behaviour of a discontinuous rock mass remains a key issue for improving excavation design in hiかy stressed environments. Although recent advances in rock mechanics have provided guidelines for the design of underground opening in isotropic rock mass, prediction and control of deformation in discontinuous rock masses are still unclear. In this study, parametric study was performed to investigate the plastic zone size, stress distribution and deformation behavior around underground opening in a discontinuous rock mass using a continuum joint model. The solutions were obtained by an elasto-plastic finite difference analysis, employing the Mohr-Coulomb failure criteria. Non-associated flow rule and perfectly plastic material behavior are also assumed.
Keywords
discontinuous rock mess; deformation behaviour; continuum joint model; finite difference analysis;
Citations & Related Records
연도 인용수 순위
  • Reference
1 박연준, Dawson, E.M.,1997, 편재절리모델의 유용성과 한계성, 터널과 지하공간, 7, 202-207
2 윤지선, 1995, 암의역학, 구미서관, 47-63
3 이희근, 양형식, 1990, 이방성 암반내 공동 굴착 과정에서의 주위 암반 거동에 관학 축척모형실험 및 수치해석, 한국자원공학회지, 27, 390-411
4 Barton, N., 1973, Review of a new shear-strength criterion for rock joints, Engineering Geology, 7, 287-332   DOI   ScienceOn
5 Brady, B.H.G., 1987, Boundary element and linked methods for underground excavation design, Analytical and Computational Methods in Engineering Rock Mechanics, Brown, E.T.(ed.), London, Allen and Unwin, 164-204
6 김영근, 이희근, 1994, 절리특성이 인공절리를 포함한 불연속암반의 변형거동에 미치는 영향에 관한 연구, 한국자원공학회지, 31, 131-141
7 Goodman, R.E., 1989, Introduction to Rock Mechanics, Second Edition, John Wiley & Sons, 141-177
8 Farmer, I.W., 169, Engineering Properties of Rocks, Barnes & Nobel Inc., 55-69
9 Hoek, E., Kaiser, P.K. and Bawden, W.F., 1995, Support of Underground Excavation in Hard Rock, Netherlands, 215p
10 Pan, Y. W. and Chen, Y. M., 1990, Plastic zones and characteristics-line families for openings in elasto-plastic rock mass, Rock Mechanics and Rock Engineering, 23, 275-292   DOI
11 Ladanyi, B. and Archambault, G., 1970, Simulation of behavior of a jointed rock mass, Proc. 11th Symp. on Rock Mechanics, 105-125
12 Vutukuri, V.S., Hossaini, S.M.F. and Foroughi, M.H., 1995, A study of the effect, of roughness and inclination of weakness planes on the strength properties of rock and coal, Mechanics of Jointed and Faulted Rock, 151-155
13 Jaeger, J.C, 1960, Shear fracture of anisotropic rocks, Geological Magazine, 97, 65-72   DOI
14 Iofis, I.M, Maksimov, A .V. and Levkin, Yu.M, 1995, The influence of joints on the stability of large underground openings, Mechanics of Jointed and Faulted Rock, 795-800
15 이연규, 1994, 록볼트로 보강한 절리암반의 점소성거동에 관한 수치해석 모델 개발, 서울대학교 공학박사 학위논문. 150p
16 Bell, F.G., 1993, Engineering Geology, Blackwell, 133-179
17 정형식, 유병옥, 1997, 암석의 풍화에 따른 강도변화 특성 및 강도 추정에 관한 연구, 한국지반공학회지, 13, 71-93
18 이상필, 이상인, 1990, 불연속 암반내 공동주위의 응릭및 변형거동에 관한 수치해석, 한국자원공학회지, 27, 268-282