Numerical model for hydro-mechanical-damage coupling of rocks based on TOUGHREACT

LIU Wu; GUO Shen-lei; LU Qian; ZHENG Lian-ge; YUAN Wen-jun

doi:10.11779/CJGE202107016

Volume 43 Issue 7

Turn off MathJax

Article Contents

Abstract

References

Chinese Journal of Geotechnical Engineering > 2021 > 43(7): 1306-1314. > DOI: 10.11779/CJGE202107016

LIU Wu, GUO Shen-lei, LU Qian, ZHENG Lian-ge, YUAN Wen-jun. Numerical model for hydro-mechanical-damage coupling of rocks based on TOUGHREACT[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(7): 1306-1314. DOI: 10.11779/CJGE202107016

Citation:

PDF (1493 KB)

Numerical model for hydro-mechanical-damage coupling of rocks based on TOUGHREACT

1.
School of Civil Engineering, Hefei University of Technology, Hefei 230009, China
2.
Key Laboratory of Geological Hazards on Three Gorges Reservoir Area (China Three Gorges University), Ministry of Education, Yichang 443002, China
3.
Lawrence Berkeley National Laboratory, Berkeley 94701, America

More Information

Received Date: August 19, 2020
Available Online: December 02, 2022

Graphical Abstract

Abstract

Abstract

For better modelling the microscopic characteristics and evolution of materials under hydro-mechanical coupling conditions, a TOUGHREACT-based hydro-mechanical-damage coupled numerical model for saturated rocks is established by using the microscopic homogenization method and the thermodynamics theory. The proposed model well accounts for the influences of sliding dilatancy, damage propagation and normal compression of arbitrary microcracks on the macroscopic deformation and failure characteristics, permeability evolution and fluid flow process. The numerical method is successfully validated through the experimental data of water injection tests on coal sample at the laboratory scale and then used to carry out application simulations of water injection responses at the field scale. The numerical simulation results demonstrate that the distributions of injection-induced rock damage and elevated pressure are affected by the injection rate, in-situ stresses and anisotropic distribution of the initial microcracks, and they are more developed in the directions with larger in-situ stress and dominant development of microcracks. Better simulations of the macroscopic hydro-mechanical responses of rocks depend on the accurate characterization of the internal microscopic structures. The research may provide a useful reference for deepening the study on hydro-mechanical coupling of rocks.
- rock mechanics,
- hydro-mechanical-damage coupling,
- permeability evolution,
- numerical analysis,
- micromechanics

FullText(HTML)

References (24)

References

[1]	陈益峰, 胡冉, 周创兵, 等. 热-水-力耦合作用下结晶岩渗透特性演化模型[J]. 岩石力学与工程学报, 2013, 32(11): 2185-2195. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201311003.htm CHEN Yi-feng, HU Ran, ZHOU Chuang-bing, et al. A permeability evolution model for crystalline rocks subjected to coupled thermo-hydro- mechanical loading[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(11): 2185-2195. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201311003.htm
[2]	WU G J, CHEN W E, RONG C, et al. Elastoplastic damage evolution constitutive model of saturated rock with respect to volumetric strain in rock and its engineering application[J]. Tunnelling and Underground Space Technology, 2020, 97: 103284. doi: 10.1016/j.tust.2020.103284
[3]	姚池, 姜清辉, 位伟, 等. 复杂裂隙岩体水-力耦合模型及溶质运移模拟[J]. 岩石力学与工程学报, 2013, 32(8): 1656-1665. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201308020.htm YAO Chi, JIANG Qing-hui, WEI Wei, et al. Numerical simulation of hydro-mechanical coupling and solute transport in complex fractured rock masses[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(8): 1656-1665. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201308020.htm
[4]	胡亚元. 基于混合物理论的饱和岩石弹塑性模型[J]. 岩土工程学报, 2020, 42(12): 2161-2169. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC202012002.htm HU Ya-yuan. Elastoplastic model for saturated rock based on mixture theory[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(12): 2161-2169. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC202012002.htm
[5]	陈益峰, 李典庆, 荣冠, 等. 脆性岩石损伤与热传导特性的细观力学模型[J]. 岩石力学与工程学报, 2011, 30(10): 1959-1969. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201110003.htm CHEN Yi-feng, LI Dian-qing, RONG Guan, et al. A micromechanical model for damage and thermal conductivity of brittle rocks[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(10): 1959-1969. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX201110003.htm
[6]	JIANG T, SHAO J F, XU W Y, et al. Experimental investigation and micromechanical analysis of damage and permeability variation in brittle rocks[J]. International Journal of Rock Mechanics and Mining Sciences, 2010, 47(5): 703-713. doi: 10.1016/j.ijrmms.2010.05.003
[7]	ZHU Q Z, SHAO J F. Micromechanics of rock damage: Advances in the quasi-brittle field[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2017, 9(1): 29-40. doi: 10.1016/j.jrmge.2016.11.003
[8]	刘武. 考虑多尺度结构的贯通节理岩体损伤摩擦耦合模型[J]. 岩土工程学报, 2018, 40(1): 147-154. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201801019.htm LIU Wu. Coupled damage and friction model for persistent fractured rocks considering multi-scale structures[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(1): 147-154. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC201801019.htm
[9]	CHEN Y F, HU S H, ZHOU C B, et al. Micromechanical modeling of anisotropic damage-induced permeability variation in crystalline rocks[J]. Rock Mechanics and Rock Engineering, 2014, 47(5): 1775-1791.
[10]	胡大伟, 朱其志, 周辉, 等. 脆性岩石各向异性损伤和渗透性演化规律研究[J]. 岩石力学与工程学报, 2008, 27(9): 1822-1827. doi: 10.3321/j.issn:1000-6915.2008.09.009 HU Da-wei, ZHU Qi-zhi, ZHOU Hui, et al. Research on anisotropic damage and permeability evolutionary law for brittle rocks[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(9): 1822-1827. (in Chinese) doi: 10.3321/j.issn:1000-6915.2008.09.009
[11]	LIU W, CHEN Y F, HU R, et al. A two-step homogenization- based permeability model for deformable fractured rocks with consideration of coupled damage and friction effects[J]. International Journal of Rock Mechanics and Mining Sciences, 2016, 89: 212-226.
[12]	DORMIEUX L, KONDO D. Micromechanics of damage propagation in fluid-saturated cracked media[J]. Revue Européenne De Génie Civil, 2007, 11(7/8): 945-962.
[13]	XIE N, ZHU Q Z, SHAO J F, et al. Micromechanical analysis of damage in saturated quasi brittle materials[J]. International Journal of Solids and Structures, 2012, 49(6): 919-928.
[14]	ZHU Q Z. Strength prediction of dry and saturated brittle rocks by unilateral damage-friction coupling analyses[J]. Computers and Geotechnics, 2016, 73: 16-23.
[15]	朱其志, 王岩岩, 仇晶晶, 等. 准脆性岩石水力耦合不排水多尺度本构模型[J]. 河海大学学报：自然科学版, 2018, 46(2): 165-170. https://www.cnki.com.cn/Article/CJFDTOTAL-HHDX201802014.htm ZHU Qi-zhi, WANG Yan-yan, QIU Jing-jing, et al. Multiscale hydro-mechanical constitutive model for qusi-brittle rocks under undrained condition[J]. Journal of Hohai University (Natural Science), 2018, 46(2): 165-170. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HHDX201802014.htm
[16]	XU T F, SPYCHER N, SONNENTHAL E, et al. TOUGHREACT Version 2.0: a simulator for subsurface reactive transport under non-isothermal multiphase flow conditions[J]. Computers & Geosciences, 2011, 37(6): 763-774.
[17]	HU C, LEMARCHAND E, DORMIEUX L, et al. Quasi-isotropic Biot’s tensor for anisotropic porous rocks: experiments and micromechanical modelling[J]. Rock Mechanics and Rock Engineering, 2020, 53(19): 4031-4041.
[18]	CHEN Y F, WEI K, LIU W, et al. Experimental characterization and micromechanical modelling of anisotropic slates[J]. Rock Mechanics and Rock Engineering, 2016, 49(9): 3541-3557.
[19]	ZHU Q Z, SHAO J F. A refined micromechanical damage- friction model with strength prediction for rock-like materials under compression[J]. International Journal of Solids and Structures, 2015, 60/61: 75-83.
[20]	BAZANT Z P, OH B H. Efficient numerical integration on the surface of a sphere[J]. ZAMM Journal of Applied Mathematics and Mechanics, 1986, 66(1): 37-49.
[21]	WU C F, ZHANG X Y, WANG M, et al. Physical simulation study on the hydraulic fracture propagation of coalbed methane well[J]. Journal of Applied Geophysics, 2018, 150: 244-253.
[22]	GAO Q, GHASSEMI A. Three dimensional finite element simulations of hydraulic fracture height growth in layered formations using a coupled hydro-mechanical model[J]. International Journal of Rock Mechanics and Mining Sciences, 2020, 125: 104137.
[23]	YI L P, LI X G, YANG Z Z, et al. A fully coupled fluid flow and rock damage model for hydraulic fracture of porous media[J]. Journal of Petroleum Science and Engineering, 2019, 178, 814-828.
[24]	刘武, 张振华, 叶晓东, 等. 层状岩体渗透特性多尺度演化模型研究[J]. 岩土工程学报, 2018, 40(增刊2): 68-72. https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2018S2016.htm LIU Wu, ZHANG Zhen-hua, YE Xiao-dong, et al. Multi-scale permeability evolution model for layered rocks[J]. Chinese Journal of Geotechnical Engineering, 2018, 40(S2): 68-72. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTGC2018S2016.htm