Creep Deformation and Gas Permeability in Fractured Claystone Under Various Stress States

被引：6

作者：

Chen, X. ^{[1
,2
]}

Xie, S. Y. ^{[2
]}

Zhang, W. ^{[2
]}

Armand, G. ^{[3
]}

Shao, J. F. ^{[1
,2
]}

机构：

[1] Hohai Univ, Key Lab, Minist Educ Geomech & Embankment Engn, Nanjing 210098, Peoples R China

[2] Univ Lille, Cent Lille, CNRS, UMR9013 LaMcube, F-59000 Lille, France

[3] Andra, F-92298 Chatenay Malabry, France

来源：

ROCK MECHANICS AND ROCK ENGINEERING | 2022年 / 55卷 / 04期

关键词：

Gas permeability; Direct shear test; Creep; Confining pressure; claystone; HYDROMECHANICAL BEHAVIOR; WATER-CONTENT; STRUCTURAL ANISOTROPY; EVOLUTION; ROCKS; FLOW;

D O I：

10.1007/s00603-022-02774-2

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Clayey rocks with low permeability are investigated as a potential geological barrier for underground disposal of radioactive waste. Subjected to thermo-hydromechanical loads, damaged zones can be created around underground structures. It is crucial to investigate the evolution of permeability in those critical zones. In this study, an original experimental study is performed on the Callovo-Oxfordian (COx) claystone investigated in the French radioactive waste disposal project. A cylindrical sample is first subjected to a confining pressure, then to different values of shear stress until the creation of a planar fracture along the height. Creep tests are conducted under the different steps of shear stress. Gas permeability is also measured during the creep phases. Unloading-reloading steps of confining pressure are further realized to investigate the gas permeability change of fractured sample. The correlation between gas permeability variation and fracture opening is analyzed.

引用

页码：1843 / 1853

页数：11

共 24 条

[1]

Andra, 2005, DOSS 2005 SYNTH EV F

[2]

[Anonymous], 1996, Soil Mechanics in Engineering Practice, DOI DOI 10.1097/00010694-194911000-00029

[3] Geometry and Properties of the Excavation-Induced Fractures at the Meuse/Haute-Marne URL Drifts [J].

Armand, G. ;

Leveau, F. ;

Nussbaum, C. ;

de La Vaissiere, R. ;

Noiret, A. ;

Jaeggi, D. ;

Landrein, P. ;

Righini, C. .

ROCK MECHANICS AND ROCK ENGINEERING, 2014, 47 (01) :21-41

[4] Fundamental aspects of the hydromechanical behaviour of Callovo-Oxfordian claystone: From experimental studies to model calibration and validation [J].

Armand, Gilles ;

Conil, Nathalie ;

Talandier, Jean ;

Seyedi, Darius M. .

COMPUTERS AND GEOTECHNICS, 2017, 85 :277-286

[5] Permeability of macro-cracked argillite under confinement: Gas and water testing [J].

Davy, Catherine A. ;

Skoczylas, F. ;

Barnichon, J.-D. ;

Lebon, P. .

PHYSICS AND CHEMISTRY OF THE EARTH, 2007, 32 (8-14) :667-680

[6] Gas and water flow in an excavation-induced fracture network around an underground drift: A case study for a radioactive waste repository in clay rock [J].

de la Vaissiere, Remi ;

Armand, Gilles ;

Talandier, Jean .

JOURNAL OF HYDROLOGY, 2015, 521 :141-156

[7] Hydric Cycle Impacts on COx Argillite Permeability and Young's Modulus [J].

Duan, Zhibo ;

Skoczylas, Frederic ;

Wang, Chuanrui ;

Talandier, Jean .

ROCK MECHANICS AND ROCK ENGINEERING, 2021, 54 (03) :1129-1147

[8] Multi-stage water permeability measurements on claystone by steady and transient flow methods [J].

Giot, Richard ;

Auvray, Christophe ;

Conil, Nathalie ;

de la Vaissiere, Remi .

ENGINEERING GEOLOGY, 2018, 247 :27-37

[9] Gas migration through water-saturated bentonite-sand mixtures, COx argillite, and their interfaces [J].

Liu, Jiang-Feng ;

Song, Yang ;

Skoczylas, Frederic ;

Liu, Jian .

CANADIAN GEOTECHNICAL JOURNAL, 2016, 53 (01) :60-71

[10] Gas permeability of a compacted bentonite-sand mixture: coupled effects of water content, dry density, and confining pressure [J].

Liu, Jiang-Feng ;

Skoczylas, Frederic ;

Talandier, Jean .

CANADIAN GEOTECHNICAL JOURNAL, 2015, 52 (08) :1159-1167

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