4 edition of Block system modeling by discontinuous deformation analysis found in the catalog.
Includes bibliographical references (p. -209).
|Series||Topics in engineering,, v. 11|
|LC Classifications||TA706 .S47 1993|
|The Physical Object|
|Pagination||209 p. :|
|Number of Pages||209|
|ISBN 10||1853120995, 0945824386|
|LC Control Number||90081262|
Xue, Q. The fracturing of a rock slab with pre-existing non-persistent joints located on a slope crest and the induced rockfall process are simulated. Photos What is DDA? Avital, Ji Cin and D. For slope stability analysis, this paper works on rock block toppling and loosening, where the block rotation is the main issue.
Modification and improvement[ edit ] Various modifications to the original DDA formulation have been reported in the rock mechanics literature. Discontinuum based Micromechanics Modelling Methods. Sato, S. For foundation stability analysis, this paper presents dam foundation damage computation, where the block sliding is a main issue. The model studied here is composed, primarily, of fractured Devonian shale to simulate a jointed overburden. Xue, Y.
Sun, G. Shi Gen-hua. Ben, J. For example, limit equilibrium is most commonly used and simple solution method, but it can become inadequate if the slope fails by complex mechanisms e. Nagano and S. Gong and B.
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Using an explicit integration operator, the displacements, rotations, and collisions of each block are calculated in the model. Liu, B. Koyama, M.
Huang, S. Once Block system modeling by discontinuous deformation analysis book effects of layer-parallel extension and relative tilt are subtracted, fault dips can be determined by calculating the vertical displacement and horizontal shortening indicated by the folds. Chen and H. Nishimura, H.
Jiang and X. Tanaka and H. Int J Eng Geol ;— Preview Unable to display preview. Analysis of Discontinuous Deformation — New Developments and Block system modeling by discontinuous deformation analysis book This book contains the 7 keynote papers written by the industry experts, international renowned researchers and specialists and 73 technical papers which reflect the state-of-the-practice on the Analysis of Discontinuous Deformation: New In addition, the use of the risk assessment concept is increasing today.
Both methods use displacements as the basic variables of unknowns, and the energy minimization principle is used to derive the equation of motion of the system in a matrix form. The variational statement combines the discrete-least-squares, penalty-constraint, and curvature-control functionals, with the latter term representing the modification of the formulation presented in.
Zhou, J. Berkeley, California; The development of DDA with third order displacement function. In this paper, a transition technique is proposed and implemented to convert a NMM modelling to a DDA modelling so as to simulate a complete rock failure process entirely by means of the two methods, in which the NMM is adopted to model the early fracturing as well as the transition from continua to discontinua, while the DDA is adopted to model the subsequent motion of the generated rock blocks.
Miao, Y. Zhao, S. To gain insights into the phenomenology of failure mechanisms and the influence of joints fractures on the displacement of the shale strata, the physical simulation is analyzed using two numerical techniques. Conference Tessler, A. Tian, S. The fracturing of a rock slab with pre-existing non-persistent joints located on a slope crest and the induced rockfall process are simulated.
Su and F. These geometric constraints result in predictive models for individual foreland uplifts, which can be used to locate and evaluate potential structural traps for oil and gas. Zhao and J. Liu and X.Introduces a new approach to rock mechanics called ``block theory,'' which formalizes procedures for selecting proper shapes and orientations for excavations in hard jointed rock.
Applies block theory to rock slopes and underground excavations, and covers the Q theory of rock classification, the empirical criterion of joint shear strength, rock bolting, properties of weak rocks, statistical 4/5(2). And then a rigorous mathematical proof was made for it (Shi, ).
Inthe publication of the book, “Block Theory and Its Application to Rock Engineering” (Goodman and Shi, ), which is written commonly by R. E. Goodman and Genhua Shi, marks the formal formation of the system of block theory.
All rightsreserved. VALIDATION OF DISCONTINUOUS DEFORMATION ANALYSIS USING A PHYSICAL MODEL A. T.
MCBride and F. Scheele Department of Civil Engineering, University of Cape Town, South Africa ABSTRACT Discontinuous Deformation Analysis (DDA) is a relatively new numerical method developed for the analysis of media consisting of isolated magicechomusic.com by: 2.However, the NMM suffers one limitation, i.e., pdf material domain area change occurs in rotation modelling.
This problem can not be easily solved because the rigid body rotation is not represented explicitly in the NMM. The discontinuous deformation analysis (DDA) is specially developed for modelling discrete block systems.Dec 01, download pdf Abstract.
In this paper, a unified rock bolt model is proposed and incorporated into the two-dimensional discontinuous deformation analysis. In the model, the bolt shank is discretized into a finite number of (modified) Euler–Bernoulli beam elements with the degrees of freedom represented at the end nodes, while the face plate is treated as solid magicechomusic.com by: 5.Ebook 27, · Advances in Discontinuous Numerical Methods and Applications in Geomechanics and Geoengineering.
Discontinuous deformation analysis method and applications. chapter Using natural-neighbor-interpolation-based DDA method for elasto-plastic analysis of discrete block system. By Y.Z. Ma & H. Zheng. View abstract. chapter Cited by: 7.