Paper Search Console

Home Search Page About Contact

Journal Title

Title of Journal: Rock Mech Rock Eng

Search In Journal Title:

Abbravation: Rock Mechanics and Rock Engineering

Search In Journal Abbravation:

Publisher

Springer Vienna

Search In Publisher:

DOI

10.1007/s00261-004-0291-3

Search In DOI:

ISSN

1434-453X

Search In ISSN:
Search In Title Of Papers:

Hollow Cylinder Simulation Experiments of Gallerie

Authors: Vincent Labiouse Claire Sauthier Shuang You
Publish Date: 2013/02/15
Volume: 47, Issue: 1, Pages: 43-55
PDF Link

Abstract

In the context of nuclear waste disposal in clay formations laboratory experiments were performed to study at reduced scale the excavation damaged zone EDZ induced by the construction of galleries in the Boom clay formation For this purpose thickwalled hollow cylindrical samples were subjected after recovery of in situ stress conditions to a decrease in the inner confining pressure aiming at mimicking a gallery excavation Xray computed tomography XRCT scans of the specimens were carried out through the testing cell before and after the mechanical unloading and allowed to quantify the displacements undergone by the clay as a result of the mechanical unloading The deformation of the hollow cylinders and the inferred extent of the damaged zone around the central hole are found to depend on the orientation of the specimen with respect to the bedding planes and show a great similarity with in situ observations around galleries and boreholes at Mol URL in the Boom clay formation In the experiments performed on samples cored parallel to the bedding the damaged zone is not symmetrical with respect to the hole axis and extends more in the direction parallel to the bedding It is the same for the radial convergence of the hole walls which is larger in the direction parallel to bedding than in the perpendicular one In contrast a test on a sample cored perpendicularly to the bedding did not show any ovalisation of the central hole after the mechanical unloading These observations confirm the significance of the preexisting planes of weakness bedding planes in Boom clay and the need for a correct consideration of the related mechanical anisotropyThe authors acknowledge the financial support provided by the European Commission for the TIMODAZ project performed as part of the sixth EURATOM framework programme for nuclear research and training activities 2002–2006 under contract FI6WCT2007036449 They are grateful to Laurent Gastaldo LMREPFL for the experiments and to Martine Bernasconi of the Department of Diagnostic and Interventional Radiology of the CHUV Lausanne Cantonal Hospital for the Xray computed tomography scans of the hollow cylinders The third author also wishes to thank the China Scholarship Council CSC for the financial support provided for her stay at LMREPFL The authors are also grateful to Joël Sarout CSIRO and to anonymous reviewer whose suggestions and comments have helped to improve the quality of the paper


Keywords:

References


.
Search In Abstract Of Papers:
Other Papers In This Journal:

  1. Development of Rock Engineering Systems-Based Models for Flyrock Risk Analysis and Prediction of Flyrock Distance in Surface Blasting
  2. Borehole Instability in Malmberget Underground Mine
  3. The Use of Infrared Thermography for Porosity Assessment of Intact Rock
  4. A nonlinear criterion for triaxial strength of inherently anisotropic rocks
  5. Modeling of Shales in Salt-Hydrocarbon Systems
  6. An Example of Realistic Modelling of Rock Dynamics Problems: FEM/DEM Simulation of Dynamic Brazilian Test on Barre Granite
  7. Comprehensive Stability Evaluation of Rock Slope Using the Cloud Model-Based Approach
  8. Wear Performance of Saw Blades in Processing of Granitic Rocks and Development of Models for Wear Estimation
  9. Determination of Poisson’s Ratio of Rock Material by Changing Axial Stress and Unloading Lateral Stress Test
  10. Micromechanical Modelling of Stress Waves in Rock and Rock Fractures
  11. ISRM Suggested Method for Monitoring Rock Displacements Using the Global Positioning System (GPS)
  12. Determination of Geometrical and Structural Representative Volume Elements at the Baihetan Dam Site
  13. Determination of Geometrical and Structural Representative Volume Elements at the Baihetan Dam Site
  14. Microseism Induced by Transient Release of In Situ Stress During Deep Rock Mass Excavation by Blasting
  15. Some Open Issues on Rockfall Hazard Analysis in Fractured Rock Mass: Problems and Prospects
  16. Connectivity of Three-Dimensional Fracture Networks: A Case Study from a Dam Site in Southwest China
  17. Evaluating Variability and Uncertainty of Geological Strength Index at a Specific Site
  18. Hybrid Finite-Discrete Element Simulation of the EDZ Formation and Mechanical Sealing Process Around a Microtunnel in Opalinus Clay
  19. Experimental Anelastic Strain Recovery Compliance of Three Typical Rocks
  20. Significance of Geological Parameters for Predicting Water Inflow in Hard Rock Tunnels
  21. A Morphological Visualization Method for Removability Analysis of Blocks in Discontinuous Rock Masses
  22. Analysis of the Thermal and Hydraulic Stimulation Program at Raft River, Idaho
  23. Effects of Heat Shock on the Dynamic Tensile Behavior of Granitic Rocks
  24. New Rapid Evaluation for Long-Term Behavior in Deep Geological Repository by Geotechnical Centrifuge. Part 1: Test of Physical Modeling in Near Field Under Isotropic Stress-Constraint Conditions
  25. Slope Failures in the Opencast Coal Mines of Wardha Valley Coalfield in Central India: A Study
  26. System Reliability Assessment for a Rock Tunnel with Multiple Failure Modes
  27. Numerical Assessment of the Progressive Rock Fracture Mechanism of Cracked Chevron Notched Brazilian Disc Specimens
  28. Algorithmic Simulation of Flow in Rock Fractures

Search Result: