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Compaction bands due to grain crushing in porous rocks:

Cited by: 70

Compaction bands due to grain crushing in porous

Cited by: 70

Compaction bands due to grain crushing in porous

Grain crushing and pore collapse are the principal micromechanisms controlling the physics of compaction bands in porous rocks. Several constitutive models have been previously used to predict the formation and propagation of these bands. However,

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Compaction bands due to grain crushing in porous

Compaction bands due to grain crushing in porous rocks: A theoretical approach based on breakage mechanics

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(PDF) Compaction bands due to grain crushing in

Grain crushing and pore collapse are the principal micromechanisms controlling the physics of compaction bands in porous rocks. Several constitutive models have been previously used to

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(PDF) Conditions for compaction bands in porous rock

Grain crushing and pore collapse are the dominant compaction mechanisms in high porosity clastic rocks. is representative of porous rock. Solutions for compaction bands are possible when the

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Theory of compaction bands in porous rock

2001-1-1  High porosity sand- stone under either pure hydrostatic compression or ax- isymmetric compression at "high" confining pressures is characterized by a stress strain curve with a knee, followed by a mildly sloping region (shelf), where grain 100 K.A. Issen and J. W. Rudnicki: Theory of Compaction Bands in Porous Rock crushing and pore collapse

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Effect of Pore Collapse and Grain Crushing on the

A saturated Bleurswiller sandstone, of 25% porosity, was compacted by increasing the confining pressure over the critical pressure P* which characterizes the onset of pore collapse and grain crushing. The frequency-dependence of Young’s moduli were measured before and after the compaction using forced-oscillation method in a triaxial cell.

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Compaction Bands in Porous Rock

2017-7-10  compaction bands no shear No volume change Range of and from data of Baud, Vajdova and Wong (JGR, 2006) for Adamswiller, Bentheim, Berea and Darley Dale sandstones. Typically and and small. Bésuelle and Rudnicki, Localization: Shear Bands and Compaction Bands, in Mechanics of Fluid Saturated Rocks, e. Guéguen and Boutéca

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Deformation bands in volcaniclastic rocks Insights

2018-8-1  1. Introduction 1.1. Deformation bands in porous granular rocks. Deformation of granular and porous (>15–20%) material at relatively shallow burial depths (generally >0–4 km) is typically expressed by deformation bands, which are tabular, mm-wide zones of localized shear and/or volume loss/gain accommodated through grain reorganization (disaggregation), grain fracturing/crushing

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Effect of Pore Collapse and Grain Crushing on the

A saturated Bleurswiller sandstone, of 25% porosity, was compacted by increasing the confining pressure over the critical pressure P* which characterizes the onset of pore collapse and grain crushing. The frequency-dependence of Young’s moduli were measured before and after the compaction using forced-oscillation method in a triaxial cell.

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(PDF) Conditions for compaction bands in porous rock

The objective of this thesis is to identify the formation of compaction bands in porous carbonate rocks in laboratory experiments and to propose a constitutive model based on second-gradient

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Breakage Mechanics Modeling of the Brittle-ductile

2020-7-17  Compaction bands due to grain crushing in porous rocks: A theoretical approach based on breakage mechanics Arghya Das,Giang Dang Nguyen,Itai Einav Geology

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Compaction localization in granular rocks: modeling

PDF This stone focuses on the simulation of localized compaction in granular rocks. For this purpose, a continuum framework referred to as Breakage Find, read and cite all the research you

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A theoritical approach to the study of compaction

The formation and propagation of compaction bands in high porosity sandstones is theoretically investigated in this stone using a new constitutive model based on the recently developed continuum breakage mechanics theory [1,2]. This model possesses a micromechanics-based link between the evolving grain size distribution (gsd) and the macroscopic stress strain relationship, through an internal

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Compaction localization in porous rock_word文档在线阅读与

somewhatlarger diameter of the loading thick compaction bands are tabular features of 5 to 15 millimeters in thicknessand up to tens of meters in length that are characterizedby predominantly compactivedeformation with grain crushing and interpenetration.

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(PDF) Multi‐scale simulation of rock compaction

Grain crushing and pore collapse are the principal micromechanisms controlling the physics of compaction bands in porous rocks. Several constitutive models have been previously used to

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Compaction Bands in Porous Rock

2017-7-10  compaction bands no shear No volume change Range of and from data of Baud, Vajdova and Wong (JGR, 2006) for Adamswiller, Bentheim, Berea and Darley Dale sandstones. Typically and and small. Bésuelle and Rudnicki, Localization: Shear Bands and Compaction Bands, in Mechanics of Fluid Saturated Rocks, e. Guéguen and Boutéca

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Deformation bands in volcaniclastic rocks Insights

2018-8-1  1. Introduction 1.1. Deformation bands in porous granular rocks. Deformation of granular and porous (>15–20%) material at relatively shallow burial depths (generally >0–4 km) is typically expressed by deformation bands, which are tabular, mm-wide zones of localized shear and/or volume loss/gain accommodated through grain reorganization (disaggregation), grain fracturing/crushing

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Simulation of drilling‐induced compaction bands

Chun Liu, David D. Pollard, Kai Gu and Bin Shi, Mechanism of formation of wiggly compaction bands in porous sandstone: 2. Numerical simulation using discrete element method,Journal of Geophysical Research: Solid Earth,120,12,(8153-8168),(2015) .

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A theoritical approach to the study of compaction

The formation and propagation of compaction bands in high porosity sandstones is theoretically investigated in this stone using a new constitutive model based on the recently developed continuum breakage mechanics theory [1,2]. This model possesses a micromechanics-based link between the evolving grain size distribution (gsd) and the macroscopic stress strain relationship, through an internal

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Compaction bands due to grain crushing in porous

Compaction bands due to grain crushing in porous rocks: a theoretical approach based on breakage mechanics By A. Das, G. Nguyen and I. Einav No static citation data No static citation data Cite

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Simulation of drilling‐induced compaction bands

Chun Liu, David D. Pollard, Kai Gu and Bin Shi, Mechanism of formation of wiggly compaction bands in porous sandstone: 2. Numerical simulation using discrete element method,Journal of Geophysical Research: Solid Earth,120,12,(8153-8168),(2015) .

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CORE

Based on the regularised model, the formation and propagation of compaction bands due to grain crushing is analysed through a numerical experiment on a porous rock specimen under triaxial loading condition. Good agreement between numerical predictions and experimental observations demonstrates the capability of the new model

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Compaction Bands in Porous Rock

2017-7-10  compaction bands no shear No volume change Range of and from data of Baud, Vajdova and Wong (JGR, 2006) for Adamswiller, Bentheim, Berea and Darley Dale sandstones. Typically and and small. Bésuelle and Rudnicki, Localization: Shear Bands and Compaction Bands, in Mechanics of Fluid Saturated Rocks, e. Guéguen and Boutéca

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What Are The Cases And Effects On Rocks Crushing

Compaction Bands Due To Grain Crushing In Porous Rocks. Distribution due to grain crushing is formulated and used for a theoretical analysis of compaction band formation in porous rocks. Linkage of the internal variables to grain crushing enables us to capture both the material behavior and the evolving grain sie distribution.

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Multiscale modeling and analysis of compaction bands in

2020-5-23  applied to simulate compaction bands in cohesive porous sandstones. Marketos and Bolton [44–46] investigated the occurrence of discrete/diffuse compaction bands due to grain crushing and debonding based on DEM simulations. In considering intra-granular damage, Wang et al. [68] modeled different types of compaction bands by shrinking

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Inelastic Compaction in High-Porosity Limestone

2018-10-8  for a porous limestone, could have been due to microcracking at the quartz grain interfaces. Similar to published data on high-porosity macroporous limestones, the crushing of calcite grains was the dominant micromechanism of inelastic compaction in Saint-Maximin limestone. New P

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Effects of pore collapse and grain crushing on ultrasonic

2013-10-25  11 was due to pore collapse and grain crushing. Theoretically, two different processes are 12 affecting the elastic wave velocities in counteracting ways during cataclastic compaction: 13 cracking and porosity decrease. Our experimental results show that cracking is the 14 dominant effect, so that grain crushing and porosity reduction were

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Tracking time with ricequakes in partially soaked

When brittle porous media interact with chemically active fluids, they may suddenly crumble. This has reportedly triggered the collapse of rockfill dams, sinkholes, and ice shelves. To study this problem, we use a surrogate experiment for the effect of fluid on rocks and ice involving a column of puffed limestone partially soaked in a reservoir of liquid under constant pressure.

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