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The Relationship between Damage and Localization

Product Code: SP289
Series: GSL Special Publications
Author/Editor: Edited by H Lewis and G D Couples
Publication Date: 03 October 2007
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Description

The many kinds of porous geomaterials (rocks, soils, concrete, etc.) exhibit a range of responses when undergoing inelastic deformation. In doing so they commonly develop well-ordered fabric elements, forming fractures, shear bands and compaction bands, so creating the planar fabrics that are regarded as localization. Because these induced localization fabrics alter the bulk material properties (such as permeability, acoustic characteristics and strength), it is important to understand how and why localization occurs, and how it relates to its setting. The concept of damage (in several uses) describes both the precursor to localization and the context within which it occurs. A key theme is that geomaterials display a strong material evolution during deformation, revealing a close linkage between the damage and localization processes.

This volume assembles perspectives from a number of disciplines, including soil mechanics, rock mechanics, structural geology, seismic anisotropy and reservoir engineering. The papers range from theoretical to observational, and include contributions showing how the deformed geomaterials’ emergent bulk characteristics, like permeability and seismic anisotropy, can be predicted. This book will be of interest to a wide range of geoscientists and engineers who deal with characterization of deformed materials.

Type: Book
Ten Digit ISBN: 1-86239-236-6
Thirteen Digit ISBN: 978-1-86239-236-6
Publisher: GSL
Binding: Hardback
Pages: 254
Weight: 0.90 kg

Contents

Introduction: the relationship between damage and localization, H Lewis and G D Couples • Damage and localisation: two key concepts in rock deformation studies, Y Gueguen and P Besuelle • The mechanics of fault distribution and localisation in high-porosity sands, Provence, France, C A J Wibberley, J-P Petit and T Rives • Strain localisation in geomaterials, J Desrues, P Besuelle and H Lewis • The progression from damage to localisation of displacement observed in laboratory testing of porous rocks, J M Logan • Microscale damage evolution in compacting sandstones, A A Di Giovanni, J T Fredrich, D J Holcomb and W A Olsson • Influence of grain-size and geothermal gradient on the ductile-to-brittle transition in arenaceous sedimentary rocks: implications for fault structure and fluid flow, Q J Fisher, S D Harris, M Casey and R J Knipe • Fracture aperture, length and pattern geometry development under biaxial loading: a numerical study with applications to natural, cross-jointed systems, J E Olson • Permeability of fault rocks from the Median Tectonic Line in Ohshika-mura, Nagano, Japan as studied by pressure-cycling tests, S Uehara and T Shimamoto • Insights into the faulting processes from numerical simulations of rock-layer bending, G D Couples, H Lewis, P Olden, G H Workman and N G Higgs • Improved seismic identification of inter-fault damage via a linked seismic-geomechanics approach, S A Hall, H Lewis and X Macle • Localization processes in a coupled hydro-geomechanically sensitive fractured system, M A Reynolds, G D Couples, H Lewis and G E Pickup • Proximity to a critical point: evidence from, and implications for, hydrocarbon reservoirs, K J Heffer

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