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  • Canadian Science Publishing  (2)
  • Amsterdam [u.a.] : Elsevier  (1)
  • Dordrecht [u.a.] : Springer  (1)
  • 1
    Monograph available for loan
    Monograph available for loan
    Fundamentals of discrete element methods for rock engineering (2007)
    Amsterdam [u.a.] : Elsevier
    Associated volumes
    Details Availability
    Call number: 15/M 08.0173
    In: Developments in geotechnical engineering
    Description / Table of Contents: 1: Fundamentals. 2. Governing equations for motion and deformation of block systems and heat transfer. 3. Constitutive models of rock fractures and rock masses - the basics. 4. Fluid flow and coupled hydro-mechanical behaviour of rock fractures. Part 2: Fracture System Characterization and Block Model Construction. 5. Basics of characterization of fracture systems - field mapping and stochastic simulations. 6. Basics of combinatorial topology for block system representation. 7. Numerical techniques for block system construction. Part 3: DEM approaches. 8. Explicit discrete element method for block systems the distinct element method. 9. Implicit Discrete Element Method for block systems - discontinuous deformation analysis (DDA). 10. Discrete Fracture Network (DFN) method. 11. Discrete Element Methods for granular materials. Part 4: Application Studies. 12. Case studies of Discrete Element Methods in geology, geophysics and rock engineering.
    Type of Medium: Monograph available for loan
    Pages: XVI, 545 S. , Ill., graph. Darst.
    ISBN: 9780444829375
    Series Statement: Developments in geotechnical engineering 85
    Classification:
    Engineering Geophysics
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Modelling rock fracturing processes : a fracture mechanics approach using FRACOD (2014)
    Dordrecht [u.a.] : Springer
    Details Availability
    Call number: M 13.0267
    Description / Table of Contents: This text book provides the theoretical background of rock fracture mechanics and displacement discontinuity methods used for the modelling of geomechanical problems. The computer program FRACOD is used to analyse the fracture problems, assessing fracture initiation and propagation in tension (Mode I), shear (Mode II) and mixed mode I and II of solid intact or jointed geomaterials. The book also presents the fundamentals of thermo-mechanical coupling and hydro-mechanical coupling. Formulations of multiple regional mechanical, thermal and hydraulic functions, which allow analyses of fracture mechanics problems for structures made of brittle, rock-like materials, are provided. In addition, instructive examples of code verification and applications are presented. Additional material: The 2-D version of the FRACOD program, a manual on the program and a wealth of verification examples of classical problems in physics, mechanics and hydromechanics are available at http://extras.springer.com. A large number of applications related to civil, mining, petroleum and environmental engineering are also included.- The first textbook available on modelling of rock fracture propagation - Introduces readers to the fundamentals of rock fracturing - Uses a modern style of teaching with theory, mathematical modelling and applications in one package - The basic version of the FRACOD software, manual, verification examples and applications are available as additional material - The FRACOD program and manual enable the readers to solve fracture propagation problems on their own.
    Type of Medium: Monograph available for loan
    Pages: XV, 173 S. : Ill., graph. Darst.
    ISBN: 9789400769038
    Classification:
    Geodynamics
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 3
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    Discrete element modeling of fluid injection–induced seismicity and activation of nearby fault (2015)
    Canadian Science Publishing
    Details
    Publication Date: 2015-10-01
    Description: Enhanced geothermal systems, shale gas, and geological carbon sequestration all require underground fluid injection in high-pressure conditions. Fluid injection creates fractures, induces seismicity, and has the potential to reactivate nearby faults that can generate a large magnitude earthquake. Mechanisms of fluid injection–induced seismicity and fault reactivation should be better understood to be able to mitigate larger events triggered by fluid injection. This study investigates fluid injection, induced seismicity, and triggering of fault rupture using hydromechanical-coupled discrete element models. Results show that a small amount of fluid pressure perturbation can trigger fault ruptures that are critically oriented and stressed. Induced seismicity by rock failure shows in general higher b-values (slope of magnitude–frequency relation) compared to seismicity triggered by the fault fracture slip. Numerical results closely resemble observations from geothermal and shale-gas fields and demonstrate that discrete element modeling has the potential to be applied in the field as a tool for predicting induced seismicity prior to in situ injection.
    Print ISSN: 0008-3674
    Electronic ISSN: 1208-6010
    Topics: Geosciences
    Published by Canadian Science Publishing
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  • 4
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    Effects of finite-size joints on the deformability of jointed rock at the two-dimensional level (1994)
    Canadian Science Publishing
    Details
    Publication Date: 1994-06-01
    Description: A numerical decomposition technique, which has resulted from a linking between joint-geometry modeling and generation schemes, and a distinct element code (UDEC), is used to study the effect of joint-geometry parameters of finite-size joints on the deformability properties of jointed rock at the two-dimensional (2D) level. The influence of joint-geometry parameters such as joint density, ratio of joint size to block size, and joint orientation on the deformability of jointed rock is shown. Relations are established between deformability properties of jointed rock and fracture-tensor parameters. An incrementally linear elastic, anisotropic constitutive model is developed to represent the prefailure mechanical behaviour of jointed rock at the 2D level. This constitutive model has captured the anisotropic, scale-dependent behaviour of jointed rock. In this model, the effect of the joint-geometry network in the rock mass is incorporated in terms of fracture-tensor components. Some insight is given related to estimation of representative elementary volumes for deformability properties of jointed rock. Key words : rock masses, deformability, distinct element method, fracture tensor, anisotropy, scale effects.
    Print ISSN: 0008-3674
    Electronic ISSN: 1208-6010
    Topics: Geosciences
    Published by Canadian Science Publishing
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