By Guowei MA, Yingxin ZHOU
This ebook comprises the 7 keynote papers written through the specialists, overseas well known researchers and experts and seventy three technical papers which mirror the state-of-the-practice at the research of Discontinuous Deformation: New improvement and functions. those papers have been chosen after a rigorous assessment strategy. It represents the newest advances in numerical and analytical tools concerning rock mechanics and engineering. Following the culture of the sequence, the most schemes of the papers are at the key block thought and its engineering functions, the discontinuous deformation research (DDA) process and the numerical manifold technique (NMM). even though, different correct themes, for instance, the distinct/discrete point strategy, the meshless process, the finite point technique in rock mechanics and engineering functions also are incorporated. For rock lots the place the discontinuities dominate their behaviour in a rock engineering method reminiscent of rock slopes and underground rock caverns, the research of discontinuous deformation is of serious value within the balance research and engineering layout. it's was hoping that this publication serves as an invaluable reference for either researchers and engineers at the new advancements and functions of many of the to be had modeling thoughts and instruments during this more and more very important box of rock mechanics and engineering. subject matters lined: * Key Block thought and Engineering functions * Discontinuous Deformation research (DDA) technique * Numerical Manifold technique (NMM) * Distinct/Discrete aspect approach (DEM) * software of UDEC, 3DEC and PFC codes * Meshless process and Rock Engineering functions * touch Algorithms * Wave Propagation via Rock Joint and Jointed Rock Mass * Deformation research of Heterogeneous fabrics * different complex Analytical and Numerical tools in Rock Engineering * Experimental thoughts and size of Discontinuous Deformation * Case reviews and different appropriate subject matters
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Extra resources for Analysis of Discontinuous Deformation New Developments and Applications
Among them, the Tangjiashan landslide was the biggest and the most notable one. 2 km north of Beichuan County, slipped down at the right bank of Tongkou river. The original river was blocked by the barrage with its height of 82–124 m, and a dammed lake had been formed with its maximum reservoir capacity about 316 million m3 . 3 million people in the downstream region were threatened by the hanging dammed lake. 4−8 In order to reproduce the kinematical process of the Tangjiashan landslide and to study the induced stresses characteristics in the barrage body, DDA is employed here, and a lot of case-trial calculations have been carried out with the final shape and location of the barrage as the objective, and the representative acceleration records obtained by strong-motion observation in this earthquake as the basic conditions.
4 3. Reproductive Simulation of Velocity In the rockfall analysis, the velocity ratio (Rv ) and the velocity ratio of the normal direction (Rn ) are used as input parameters (Fig. 2 and Eqs. (1), (2)). However, these parameters have the property which decreases when the incident velocity of the normal direction increases. Rv = Vout Vin Figure 2. Properties of bouncing. 40 (1) Analysis of Discontinuous Deformation: New Developments and Applications Figure 3. Scale Factor Curve was proposed considering to the velocity-dependency.
Reference Works for Rockfall Countermeasure Manual. Tokyo: Maruzen Publisher, 1983. 4. , Nishiyama. , Fukuroi. , Yonezu. K and Miki. S. 2004. The application of 3-dimentional DDA with spherical rigid block to rockfall simulation. Proc. of the ISRM International Symposium 3rd ARMS, Kyoto, Japan. pp. 1243–1248. 5. , Bowen, T. 1, pp. 135–146. 45 Analysis of Discontinuous Deformation: New Developments and Applications 6. , et al. 2000. A view of parameter and roughness on field slop used in rock-fall simulation method.
Analysis of Discontinuous Deformation New Developments and Applications by Guowei MA, Yingxin ZHOU