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1-20 of 37
Keywords: rock block
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Proceedings Papers
Rainfall-Induced and Structurally-Controlled Slope Failure and Rockfall Incidents along part of Werka Descent Road and Remedial Measures, North West Of Saudi Arabia
Available to Purchase
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-239
... mechanics isrm13 Upstream Oil & Gas rock slope rock block Rockfall Incident RAINFALL-INDUCED AND STRUCTURALLY-CONTROLLED SLOPE FAILURE AND ROCKFALL INCIDENTS ALONG PART OF WERKA DESCENT ROAD AND REMEDIAL MEASURES, NORTH WEST OF SAUDI ARABIA * B. H. Sadagah Faculty of Earth Sciences, King...
Proceedings Papers
Discontinuum Models for Dam Foundation Failure Analysis
Available to Purchase
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-008
... of rock blocks defined by the rock mass discontinuities, considering the installed water pres- sures and the dam loads. More recently, Goodman & Powell (2003) applied Shi and Goodman s Block Theory to identify moveable blocks in concrete dam foundations. All these tech- niques, based on simple block...
Proceedings Papers
Monitoring of Cracks Opening in the Walls of Deep Pits
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Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-039
... & Gas acquisition center open pit rock block antenna installation fracture dangerous site Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 Monitoring of cracks opening in the walls of deep pits Victor Oparin...
Proceedings Papers
Stability Modelling of Isolated Rock Blocks at the Surface of Underground Excavations Taking into Account In-Situ Stresses
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Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-059
... ABSTRACT Isolated rock block methods have been widely used to evaluate the stability of underground excavations in blocky rock masses. However, these methods are generally based on geometrical considerations, ignoring the underground conditions and considering simplified translational...
Proceedings Papers
Dynamic Analysis of Rock Tunnel Failure by Using 3-D Numerical Manifold Method
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Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-062
... complete failure process of key blocks in a rock tunnel. Based on the developed 3-D NMM, a rock block falling from the side and roof of a horseshoe-shaped tunnel is studied. 12 discrete blocks are created, from which the most critical key blocks are found. The falling process of the key blocks detaching...
Proceedings Papers
Geological Origin and Stability Analysis of the Suoduoxi Accumulation Body in the Upper Reaches of the Jinsha River
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Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-194
... geological origin and stability, the four recognitions below are obtained. (1) Most of the accumulation is composed of big rock blocks and gravel-bearing soil, dominated by big rock blocks. So there is a rock block arching in the accumulation. But domain 2 has obvious different structure from other domains...
Proceedings Papers
Modelling Earthquake-Induced Rock Failures Using NMM and DDA
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Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-223
... loading is applied in the form of constraining seismic displacement time history. The fracturing of the rock slab and the transition from continuous rock to discrete rock blocks are modelled by the Numerical Manifold Method (NMM) coupled with a fracturing algorithm based on the Mohr-Coulomb criterion...
Proceedings Papers
Rock Slope Stability Analysis Using the Discontinuous Deformation Analysis
Available to Purchase
Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-365
.... The study shows that the DDA, which accounts for the block kinematics, provides a very different factor of safety as compared with Sarma's method. More realistic reaction forces around each rock block can be obtained by the DDA. The DDA's result shows two possible directions for the relative movement...
Proceedings Papers
Probabilistic Rockfall Encounter Analysis Using a Three-dimensional Simulation Model
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Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-144
... of potential falling rock blocks on slope is important, and it is also important to estimate travel distance of the rock blocks and their velocities at any points on the topographical map (Jaboyedoff et al. 2005). Estimations of them affect protection measures against rockfall. Often numerical simulations...
Proceedings Papers
Dynamic Characteristics of Unstable Rock Blocks
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Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-247
... ABSTRACT It is known that the time from the generation of the displacement to the collapse of the rock block is very short. Therefore, to evaluate the stability of the rock blocks quantitatively, it is necessary to find a sign that appears before the generation of the displacement. The rock...
Proceedings Papers
Statistical Joint Modeling And Stability Analysis of Rock Blocks Around a Tunnel
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Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-230
... length division frequency joint trace removable block rock block statistical joint modeling diameter distribution positional probability volumetric frequency joint diameter distribution tunnel stability analysis trace length distribution estimation joint modeling ABSTRACT...
Proceedings Papers
Analysis of Rock Avalanches Generated By Large Planar Rock Slides By Means of Numerical Methods For Discontinua
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Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-213
... to bedding. fracture characterization numerical method avalanch mechanical property Upstream Oil & Gas dissipation avalanche gravity centre stiffness dynamic friction coefficient Reservoir Characterization strength runout coefficient rock block deposit planar rock slide rock...
Proceedings Papers
Parameter Variability In the Toppling Stability of Rock Blocks
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Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-143
... dieser Probleme zu bestimmen. Stability of a rigid block on an inclined plane In rock slopes, the simplest failure modes are sliding and toppling. Sliding occurs due to a translation movement of a rock block or a rock mass along a plane failure surface. Toppling involves rotation of rock blocks...
Proceedings Papers
Measurement of Acoustic Emission And Interpretation of Its Results During Excavation of a Rock Cliff With Opening Joints
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Paper presented at the 10th ISRM Congress, September 8–12, 2003
Paper Number: ISRM-10CONGRESS-2003-176
... In the upper part of the planned location of the portal of a highway tunnel, there was a steep rock cliff with several unstable rock blocks. It seemed that the risk of those rock blocks to fall was very high. The cut-out to stabilize the rock cliff was monitored with various measuring...
Proceedings Papers
Modelling the Failure Mechanisms of Rock Mass Models By UDEC
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Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-195
... fracture through the rock blocks; (b) sliding along joint planes; and (c) mixed split-sliding mode of type (a) and type (b) In mixed split-sliding mode, the failure process of a rock mass initiates by slip along the pre-existing joint surfaces and follows by fracturing through the individual rock blocks...
Proceedings Papers
Mechanical Properties For the Rockmass In the Central Barrier of Temporary Shiplock In Three Gorges Project
Available to PurchaseJ.W. Cassie, X.R. Ge, S.W. Bai, D.X. Feng, G.F. Xue, L.X. Xu, K.H. Cheng, Q.G. Yang, C.F. Lee, Y.K. Cheung
Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-266
... and its rock blocks slide along the primary structural planes with the mechanical properties of the rock blocks unaffected basically and no secondary structural planes generated, (3) the scope and shape of the disturbed zone are well coin- cident with those of the damaged area of tension and shear. RESUME...
Proceedings Papers
Stability Analysis Using Finite Difference Method
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Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-031
... not be modelled using simple models like c.g, slip circle method, The complex interaction between rock blocks must be taken into con- sideration. I The global factor of safety of jointed rock can be calculated using the "shear strength reduction" technique. This technique in a finite clement or a finite...
Proceedings Papers
Discrete Fracture Network Approach For Thermally Assisted Gravity Segregation Enhanced Oil Recovery
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Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-090
... oil recovery equation 2 fracture recovery rock block Discrete fracture network approach for thermally assisted gravity segregation: . . enhanced oil ~ecovery .. , Methode basee sur les reseaux discrets de fractures appliquee a rarnelioratlon du taux de recuperation du petrote par separation par...
Proceedings Papers
Vertical And Inclined Impacts of Rock Blocks On a Rock Shed Model
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Paper presented at the 9th ISRM Congress, August 25–28, 1999
Paper Number: ISRM-9CONGRESS-1999-113
...Vertical and inclined impacts of rock blocks on a rock shed model ". ~ Impacts verticaux et inclines de blocs sur un modele de toit de galerie de protection Vertikale und schraqe Einschlage auf ein Model einer Schutzgalerie '" S.MONTANI STOFFEL, V.LABIOUSE & F.DESCOEUDRES, Laboratoire de Mecanique...
Proceedings Papers
Analysis of Open Excavations In Jointed Rock Masses Using Finite And Distinct Element Methods
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Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-137
... FEM Carter horizontal strain rock block jointed rock vertical joint Analysis of open excavations in jointed rock masses using finite and distinct element methods Berechnung e,inersenkrechten BOschung in geklOftetem Gebirge unter Verwendung der Fi.niten-und der Distinct Element Methode l...
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