지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.5
- 수록면
- 5 - 16 (12page)
이용수
초록· 키워드
오류제보하기
A rainfall induced slope failure is a common natural hazard in mountainous areas worldwide. Sudden and rapid failures which have a high possibility of occurrence in a steep slope are always the most dangerous due to their suddenness and high velocities. Based on a series of experiments this study aimed to determine a critical angle which could be considered as an approximate threshold for a sudden failure. The experiments were performed using 0.42 ㎜ mean grain size sand in a 200 ㎝ long, 60 ㎝ wide and 50 ㎝ deep rectangular flume. A numerical model was created by integrating a 2D seepage flow model and a 2D slope stability analysis model to predict the failure surface and the time of occurrence. The results showed that, the failure mode for the entire material will be sudden for slopes greater than 67°; in contrast the failure mode becomes retrogressive. There is no clear link between the degree of saturation and the mode of failure. The simulation results in considering matric suction showed good matching with the results obtained from experiment. A subsequent discarding of the matric suction effect in calculating safety factors will result in a deeper predicted failure surface and an incorrect predicted time of occurrence.
목차
ABSTRACT
1. Introduction
2. Experimental Work
3. Numerical Work
4. Results and Discussions
5. Conclusion
References
참고문헌 (32)
참고문헌 신청
Baker, R. (1980), Determination of the critical slip surface in
slope stability computations, International Journal for Numerical
and Analytical Methods in Geomechanics Vol. 4, pp. 333~359.
Collins, B. D. and Znidarcic, D. (2004), Stability analyses of
rainfall induced landslides, Journal of Geotechnical and Geoenvironmental
Engineering No. 4, pp. 362~372, DOI: 10.1061
(ASCE)1090-0241(2004)130:4(362).
Fannin, R. J. and Jaakkola, J. (1999), Hydrological response
of hillslope soils above a debris-slide headscarp, Can. Geotech.
J, Vol. 36, No. 6, pp. 1111~1122.
Fredlund, D. G., Xing, A., Fredlund, M. D. and Barbour S.
L. (1996), The relationship of the unsaturated soil shear strength
to soil-water characteristic curve, Canadian Geotechnical Journal,
No. 33, pp. 440~448.
Freeze, R. A. (1971a), Three dimensional transient, saturated
unsaturated flow in a fround water basin, Water Resources
Research, No. 7, pp. 347~366.
Collins, B. D. and Znidarcic, D. (2004), Stability analyses of
rainfall induced landslides, Journal of Geotechnical and Geoenvironmental
Engineering No. 4, pp. 362~372, DOI: 10.1061
(ASCE)1090-0241(2004)130:4(362).
Fannin, R. J. and Jaakkola, J. (1999), Hydrological response
of hillslope soils above a debris-slide headscarp, Can. Geotech.
J, Vol. 36, No. 6, pp. 1111~1122.
Fredlund, D. G., Xing, A., Fredlund, M. D. and Barbour S.
L. (1996), The relationship of the unsaturated soil shear strength
to soil-water characteristic curve, Canadian Geotechnical Journal,
No. 33, pp. 440~448.
Freeze, R. A. (1971a), Three dimensional transient, saturated
unsaturated flow in a fround water basin, Water Resources
Research, No. 7, pp. 347~366.
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