Advances in Discontinuous Numerical Methods and Applications in Geomechanics and Geoengineering

Rocks and soils can behave as discontinuous materials, both physically and mechanically, and for such discontinuous nature and behaviour there remain challenges in numerical modelling methods and techniques. Some of the main discontinuum based numerical methods, for example the distinct element method (DEM) and the discontinuous deformation analysis (DDA), are associated with geomechanics and geoengineering. Discontinuous numerical methods have been widely applied in geoengineering related to civil, mining, hydropower and petroleum engineering. There are many good examples of the use of UDEC/3DEC and DDA in design and forensic of geoengineering projects, in dams, slopes, tunnels, caverns and mines. The discontinuous numerical methods provide good tools to capture the true physical and mechanical behaviours of the geomaterials, and provide the scientific insights enabling for better engineering. Discontinuous numerical methods are indeed very much research and engineering tools of the present, and certainly more in the future. Advances in Discontinuous Numerical Methods and Applications in Geomechanics and Geoengineering is a collection of 55 technical papers presented at the 10th International Conference on Analysis of Discontinuous Deformation (ICADD-10), held 6-8 December 2011, Honolulu, USA. The papers cover a wide scope of discontinuous numerical methods from algorithms and mechanics, to modelling techniques and applications, including the key block theory, the discontinuous deformation analysis, the numerical manifold method, the distinct element method, coupled discontinuum and continuum methods, multi-scale and multi-physics in modelling, applications and case studies of engineering projects.

Table of Contents:
Preface Keynotes Rock block stability analysis of slopes and underground power houses, G.H. Shi Recent developments and future trends in distinct element methods — UDEC/3DEC and PFC codes, J.V. Lemos Application of DDA and NMM to practical problems in recent new insight, Y. Ohnishi, T. Koyama, T. Sasaki, I. Hagiwara, S. Miki & T. Shimauchi Complete and high order polynomial displacement approximation and its application to elastic mechanics analysis based on DDA, A.Q. Wu, Y. Zhang & S.Z. Lin Discontinuum based micromechanics modelling methods, G.F. Zhao & J. Zhao (EPFL) Immersed boundary based fluid coupling in mechanics of discontinua, A. Munjiza, J.J.R. Williams, E.J. Avital, J. Cin & D. Xu Toward a realistic rock mass numerical model, G.W. Ma & G.Y. Fu DDARF-A simple solution for simulating rock fragmentation, Y.Y. Jiao & X.L. Zhang Discontinuous deformation analysis method and applications New contact resolution algorithm using two-stage contact definition and rounding scheme in 3D DDA, T.Y. Ahn & J.J. Song Coupling fluid flow with discontinuous deformation analysis, Y.X. Ben, J. Xue, Q.H. Miao & Y. Wang Numerical simulation of landslide turning into debris flows using discontinuous deformation analysis method, B. Hu, A.Q. Wu, B.W. Gong & B. Lu DDA simulations for slope failure/collapse experiment caused by torrential rainfall, T. Koyama, K. Irie, K. Nagano, S. Nishiyama, N. Sakai & Y. Ohnishi Using natural-neighbor-interpolation-based DDA method for elasto-plastic analysis of discrete block system, Y.Z. Ma & H. Zheng A numerical study of the significance of joint roughness in discontinuum modelling, A. Mortazavi & A. Bonakdar History of road construction with discontinuous analysis in Japan, T. Nakai, K. Hatakeyama & Y. Ohnishi Nonreflecting boundaries for the discontinuous deformation analysis, Y.J. Ning & Z.Y. Zhao Studies on rock fall problems by three dimensional discontinuous deformation analysis, T. Sasaki, I. Hagiwara, S. Miki, Y. Ohnishi & T. Koyama Anchorage effect on fractured rock and cavern stability analysis using DDA method, S. Yu, W. Wang & W. Zhu Masonry retaining wall under static load using discontinuous deformation analysis, J.Q. Tian, S. Nishiyama, T. Koyama & Y. Ohnishi Development of graphic user interface for Discontinues Deformation Analysis (DDA), G.F. Zhao, N. Khalili, X.B. Zhao & X.B. Tu On the implementation of augmented lagrangian method in the 2D discontinuous deformation analysis, Z.Y. Zhao, H.R. Bao & Q. Tian The method of slope modelling for rockfall analysis using 3D DDA, L. Zheng, G. Chen, K. Zen & K. Kasama Key block theory, block cutting and applications Generation of three-dimensional rock mass geometrical model, G.Y. Fu & G.W. Ma An efficient block detection algorithm in 3D-DDA, A. Jafari & M. Khishvand Block identification algorithm for complex free planes, J.Y. Li, J. Xue, J. Xiao & Y. Wang Stability analysis of determined blocks in the underground powerhouse of guandi hydropower station, B. Lu, X.L. Ding, Z.H. Dong & A.Q. Wu Modeling method for complex key block based on Nef polyhedra, J. Xue, Q.H. Miao, Y.X. Ben, J.Y. Li & Y. Wang Three-dimensional block cutting and its some applications to rock engineering, Q.H. Zhang & A.Q. Wu Numerical manifold method and further developments Application of manifold method to punch loading tests for polymer bonded explosives, K. Dai, P. Chen & H. Huai Study for reinforcement planning of masonry structure with cracks at Bayon main tower, Angkor, M. Hayashi, S. Yamada, M. Araya, T. Koyama, M. Fukuda & Y. Iwasaki Accelerating contact detection using spatial hashing for Numerical Manifold Method, Q.H. Miao, J. Xue, Y.X. Ben & L. Li Research on solving geometric nonlinear problems with fixed triangular meshes, H. Su, Y. Gong & X. Xie An introduction of Particle Manifold Method (PMM), L. Sun, G.F. Zhao & J. Zhao (EPFL) Simulation of seepage in porous medium by Numerical Manifold Method, Y. Wang & J.K. Gong Research on 3 dimension manifold method and its application, Y. Wu, G. Chen, Z. Jiang, Q. Li, W. Wei, X. Liu & J. Zhao (CEA) Distinct element method and applications A numerical study of goaf stability under a desert expressway, S.G. Chen, C. Hu & L. Xiong A study on hole-cutting in deep tunneling, S.G. Chen, L. Chen, C. Hu & X.R. Tan A numerical study on shear characteristics of jointed rock under thermo—mechanical coupled condition, T. Kim, C-S. Lee & S. Jeon PFC numerical simulation of particle breakage of the clay core rock-fill dam, F.H. Liu, J. Liu & X.J. Kong A study on the stability of a big-section tunnel in karst area, H. Ma, S.G. Chen, C. Hu & X.R. Tan Modelling dynamic crack propagation by distinct lattice spring model, H.S. Ma, H.G. Ji, L.J. Yin & G.F. Zhao A numerical analysis of the effect of rock bridges on wave propagation, A. Mortazavi & M. Sharafisafa Continuum and discontinuum analysis of large shallow rock caverns, V. Nasri, S. Rashidi, N. Allahverdi & M. Sepehrmanesh Simulation of progressive failure in slope using distinct element method with the gravity increased procedure, T. Nishimura, H. Hiramatsu & S. Kayano Stability analysis and reinforcement evaluation of the left bank slope in Jingping I hydropower station, G. Rong, Q-H. Jiang, C-B. Zhou, J. Peng, X-J. Wang & T. Chen Investigate water flowing in fractured strata over a gob zone, Z. Yang, C. Huang, S. Liu, B. Wang, S. Wang & L. Wang Reliability assessment of ultimate and serviceability limit states of underground rock caverns, W.G. Zhang, A.T.C. Goh & J.Y.K. Wong UDEC application in rock support optimization for Pianqiao diversion tunnel, Y.B. Zhao, S.G. Chen, C. Hu & X.F. Deng A three-dimensional stochastic granule model with real shapes and numerical simulation of rockfill behavior, W. Zhou, X.L. Chang & C-B. Zhou Discontinuous modelling of finite element and other methods Elastic-plasticity deformation analysis for rock slope with anti-dip angle contact interface, X.D. Li & C. Su An analytical study about dynamic failure mechanism of anchor bolts embedded in concrete, S. Munemoto & Y. Sonoda Computational coupling methods of dynamic problems with different discrete idealizations, K. Sato, S. Maeda, T. Kawahara, Y. Tanaka & H. Takeda Stability study of surrounding rock with parallel weak interlayer, C. Su, Y.S. Jiang & X.D. Li Moisture and heat transfer characteristics of the pavement with water retention base course, E. Tomotsugu, S. Yasunori, K. Morito, C. Su, Y.S. Jiang & X.D. Li Contact analysis and foundation reinforcement measures of ship lock on soft foundation, C. Xu, C. Su & F. Sheng On accuracy of solution for explicit and implicit dynamic formulation with hybrid-type penalty method, T. Yagi, N. Takeuchi & K. Yamamura