Modelling gas flow along localized dilatant pathways: challenges and perspective

A.A.M. Dieudonné; J. Liaudat; Z. Huang; P.J. Vardon

Modelling gas flow along localized dilatant pathways: challenges and perspective

A.A.M. Dieudonné^*, J. Liaudat, Z. Huang, P.J. Vardon

^*Corresponding author for this work

Geo-engineering

Research output: Contribution to conference › Poster › Scientific

Abstract

Gas flow along localized dilatant pathways is considered as an important gas transfer mechanism in saturated plastic clays such as Boom clay. The process involves micro-fracturing of the pore space at rising gas pressures, gas flow and possibly sealing of the newly-created pathways.

Modelling gas flow along localized dilatant pathways presents a number of challenges associated with: (1) the very strong coupling between the hydraulic and mechanical aspects of the problem, (2) the microscopic scale of the process and (3) the important influence of material heterogeneities on the process dynamics.

This contribution presents a review of existing theoretical and numerical frameworks for damage, strain localisation and fracture of clay materials. In particular, it addresses the suitability of these approaches as a basis for the development of new modelling framework for gas flow along localized dilatant pathways.

The research was carried out within the WP GAS of EURAD (2019 - 2024).

Original language	English
Number of pages	1
Publication status	Published - 2022
Event	8th International Conference on Clays in Natural and Engineered Barriers for Radioactive Waste Confinement - Nancy, France Duration: 13 Jun 2022 → 16 Jun 2022

Conference

Conference	8th International Conference on Clays in Natural and Engineered Barriers for Radioactive Waste Confinement
Country/Territory	France
City	Nancy
Period	13/06/22 → 16/06/22

Cite this

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title = "Modelling gas flow along localized dilatant pathways: challenges and perspective",

abstract = "Gas flow along localized dilatant pathways is considered as an important gas transfer mechanism in saturated plastic clays such as Boom clay. The process involves micro-fracturing of the pore space at rising gas pressures, gas flow and possibly sealing of the newly-created pathways.Modelling gas flow along localized dilatant pathways presents a number of challenges associated with: (1) the very strong coupling between the hydraulic and mechanical aspects of the problem, (2) the microscopic scale of the process and (3) the important influence of material heterogeneities on the process dynamics.This contribution presents a review of existing theoretical and numerical frameworks for damage, strain localisation and fracture of clay materials. In particular, it addresses the suitability of these approaches as a basis for the development of new modelling framework for gas flow along localized dilatant pathways.The research was carried out within the WP GAS of EURAD (2019 - 2024).",

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T1 - Modelling gas flow along localized dilatant pathways

T2 - 8th International Conference on Clays in Natural and Engineered Barriers for Radioactive Waste Confinement

AU - Dieudonné, A.A.M.

AU - Liaudat, J.

AU - Huang, Z.

AU - Vardon, P.J.

PY - 2022

Y1 - 2022

N2 - Gas flow along localized dilatant pathways is considered as an important gas transfer mechanism in saturated plastic clays such as Boom clay. The process involves micro-fracturing of the pore space at rising gas pressures, gas flow and possibly sealing of the newly-created pathways.Modelling gas flow along localized dilatant pathways presents a number of challenges associated with: (1) the very strong coupling between the hydraulic and mechanical aspects of the problem, (2) the microscopic scale of the process and (3) the important influence of material heterogeneities on the process dynamics.This contribution presents a review of existing theoretical and numerical frameworks for damage, strain localisation and fracture of clay materials. In particular, it addresses the suitability of these approaches as a basis for the development of new modelling framework for gas flow along localized dilatant pathways.The research was carried out within the WP GAS of EURAD (2019 - 2024).

AB - Gas flow along localized dilatant pathways is considered as an important gas transfer mechanism in saturated plastic clays such as Boom clay. The process involves micro-fracturing of the pore space at rising gas pressures, gas flow and possibly sealing of the newly-created pathways.Modelling gas flow along localized dilatant pathways presents a number of challenges associated with: (1) the very strong coupling between the hydraulic and mechanical aspects of the problem, (2) the microscopic scale of the process and (3) the important influence of material heterogeneities on the process dynamics.This contribution presents a review of existing theoretical and numerical frameworks for damage, strain localisation and fracture of clay materials. In particular, it addresses the suitability of these approaches as a basis for the development of new modelling framework for gas flow along localized dilatant pathways.The research was carried out within the WP GAS of EURAD (2019 - 2024).

UR - https://hopscotch.key4events.com/AbstractList.aspx?e=190&preview=1&aig=-1&ai=11348

M3 - Poster

Y2 - 13 June 2022 through 16 June 2022

ER -

Modelling gas flow along localized dilatant pathways: challenges and perspective

Abstract

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