- Volume 22 Issue 3
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Rockfall and Toppling Failure Simulation of Rock Slopes using 3-Dimensional Discontinuous Deformation Analysis
3차원 불연속변형해석법을 이용한 암반사면의 낙석과 전도 파괴 시뮬레이션
- Received : 2012.06.04
- Accepted : 2012.06.26
- Published : 2012.06.30
Many researches on disaster prevention using computer simulation methods can be performed to minimize the damage of property and to protect human life. Discontinuous deformation analysis (DDA) is a new computer simulation method to analyze the behavior of discontinuous rock masses. Since most rock slope problems are 3-dimensional in nature, 2-dimensional deformation analysis has limited application. In this study, the basic principles of 3-dimensional discontinuous deformation analysis are described. The newly developed 3-dimensional discontinuous deformation analysis method is proposed as the computer simulation method for discontinuous rock masses. Then, the failure behavior of rock slopes are simulated using 3-dimensional discontinuous deformation analysis. The simulation results are compared and examined with the failure behavior at the rock slopes. The results show the applicability of 3-dimensional discontinuous deformation analysis to analyze the deformation and failure mechanisms of rock slopes.
Disaster prevention;Computer simulation method;3-dimensional discontinuous deformation analysis;Rock slope;Failure behavior
- Chikahisa H., K. Kobayashi, K. Matsumoto, M. Tsutsui, and Y. Ohnishi, 1997, "Geological Survey for DDA and it Application to a Large Rock Cavern", Proc. the 2nd Int. Conf. on Analysis of Discontinuous Deformation, Edited by Y. Ohnishi, Kyoto, 263-273.
- Hayashi, T. and T. Mura, 1971, Calculus of Variations, Corona Publishing Co., Ltd.
- Huebner, K. H., 1975, The Finite Element Method for Engineering, John Wiley & Sons, Inc.
- Hwang, J.-Y., 2003, Stability evaluation of rock blocks in tunnels for observational method, Ph.D. Dissertation, Kyoto University, Kyoto, 289.
- Hwang, J.-Y., Y. Ohnishi, and S. Nishiyama, 2003, "Removability and Stability Analysis Method of Rock Blocks Considering Discontinuity Persistence in Tunnel Construction", Jour. of the KGS, KGS, 39-48.
- Hwang, J.-Y. and M. Sato, 2004, "New Practical Rock Block Analysis for Observational Design and Construction Method in Large Tunnels", J. of Tunnel Engineering, 14, 17-26.
- Jing, L., 1998, "Formulation of Discontinuous Deformation Analysis (DDA) - An Implicit Discrete Element Model for Block Systems", Engineering Geology, 49, 371-381. https://doi.org/10.1016/S0013-7952(97)00069-0
- Kim, Y.-I. and Y.-G. Kim, 2000, "Modeling the Effect of Excavation Sequence and Reinforcement on the Response of Tunnels with Discontinuous Deformation Analysis Method", Tunnel & Underground Space, 10, 25-32.
- Ohnishi, Y., 1999, "Survey, Analysis and Evaluation for Discontinuous Rock Mass", Soil and Foundation, 47, 61-62.
- Ohnishi Y., 2000, "Rock Mass Analysis Techniques and Rock Mass Modeling", Geology and Survey, 83, 26-33.
- Ohnishi Y., 2002, "Keynote Lecture: Numerical Methods and Tunneling", Proc. the Fourth Int. Summer Symp., Kyoto, 1-21.
- Sasaki, T., Y. Ohnishi, and R. Yoshinaka,, 1994, "Discontinuous Deformation Analysis and Its Application to Rock Mechanics Problems", J. of Geotechnical Engineering, 493, 11-20.
- Shi, G. H., 1989, Discontinuous Deformation Analysis - A New Numerical Model for the Static and Dynamics of Block Systems, Ph.D. Dissertation, Univ. of California, Berkeley.
- The Analysis of Rainwater Storage Facility Project for the Urban Disaster Prevention in Busan and its Countermeasures vol.25, pp.1, 2015, https://doi.org/10.7474/TUS.2015.25.1.037
- Stability and Deformation Analysis Considering Discontinuities in Rock Mass vol.25, pp.1, 2015, https://doi.org/10.7474/TUS.2015.25.1.068