A Statistical Constitutive Damage Model for Rock under Water Pressure

HE Zhi-lei; ZHU Zhen-de; RUAN Huai-ning; DAI Bi-bo

doi:10.11988/ckyyb.20171328

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Journal of Changjiang River Scientific Research Institute ›› 2019, Vol. 36 ›› Issue (6) : 54-59. DOI: 10.11988/ckyyb.20171328

ROCKSOIL ENGINEERING

A Statistical Constitutive Damage Model for Rock under Water Pressure

HE Zhi-lei^1,2,3, ZHU Zhen-de^2,3, RUAN Huai-ning^2,3, DAI Bi-bo¹

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Abstract

A statistical constitutive damage model was developed within the elastic theory frame of porous materials to investigate rock damage characteristics under water pressure. By incorporating continuum damage mechanics and statistical theory with the principle of effective stress, the Hoek-Brown criterion was regarded as a microbody strength failure criterion. According to the relationship between residual strength and peak strength, the damage variable of the model was modified for fully reflecting the softening characteristics in the post-peak stage. The model was validated using indoor experimental data. Results evinced the established model could well reflect the stress-strain relationship of rock under water pressure. As water pressure increased, the value of model parameter n exhibited a rising trend and the brittleness of rock also increased, but the value of F₀ and the strength of rock both declined. In addition, peak point method is better than curve fitting method in determining model parameters.

Key words

rock mechanics / water pressure / Hoek-Brown criterion / statistical damage model / residual strength / peak point / curve fitting

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HE Zhi-lei, ZHU Zhen-de, RUAN Huai-ning, DAI Bi-bo. A Statistical Constitutive Damage Model for Rock under Water Pressure[J]. Journal of Changjiang River Scientific Research Institute. 2019, 36(6): 54-59 https://doi.org/10.11988/ckyyb.20171328

References

[1] 沈明荣,陈建峰. 岩体力学[M]. 上海:同济大学出版社, 2006.
[2] 邢福东,朱珍德,刘汉龙,等. 高围压高水压作用下脆性岩石强度变形特性试验研究[J]. 河海大学学报(自然科学版),2004, 32(2): 184-187.
[3] 周青春,李海波,杨春和,等. 南水北调西线一期工程砂岩温度、围压和水压耦合试验研究[J]. 岩石力学与工程学报. 2005, 24(20): 41-47.
[4] 李玉寿,杨永杰,杨圣奇,等. 三轴及孔隙水作用下煤的变形和声发射特性[J]. 北京科技大学学报,2011, 33(6): 658-663.
[5] 温韬,唐辉明,刘佑荣,等. 考虑裂纹闭合效应的岩石损伤力学模型及耗散能量分析[J]. 长江科学院院报, 2016, 33(5):69-75.
[6] 周永强,盛谦,冷先伦,等. 考虑残余强度和阈值影响的岩石弹性损伤统计模型[J]. 长江科学院院报, 2016, 33(3):48-53.
[7] 康亚明,刘长武,陈义军,等. 水压轴压联合作用下煤岩的统计损伤本构模型研究[J]. 西安建筑科技大学学报(自然科学版),2009, 41(2): 180-186.
[8] 王伟,田振元,朱其志,等. 考虑孔隙水压力的岩石统计损伤本构模型研究[J]. 岩石力学与工程学报,2015,34(增刊2): 3676-3682.
[9] 曹文贵,张升. 基于Mohr-Coulomb准则的岩石损伤统计分析方法研究[J]. 湖南大学学报(自然科学版),2005, 32(1): 43-47.
[10]石崇,蒋新兴,朱珍德,等. 基于Hoek-Brown准则的岩石损伤本构模型研究及其参数探讨[J]. 岩石力学与工程学报,2011,30(增刊1): 2647-2652.
[11]曹瑞琅,贺少辉,韦京,等. 基于残余强度修正的岩石损伤软化统计本构模型研究[J]. 岩土力学,2013, 34(6): 1652-1660.
[12]王军保,刘新荣,李鹏. 岩石损伤软化统计本构模型[J]. 兰州大学学报(自然科学版),2011, 47(3): 24-28.
[13]曹文贵,方祖烈,唐学军. 岩石损伤软化统计本构模型之研究[J]. 岩石力学与工程学报,1998, 17(6): 628-633.
[14]郑颖人,沈珠江,龚晓南. 岩土塑性力学原理[M].北京:中国建筑工业出版社, 2002.
[15]张明,王菲,杨强. 基于三轴压缩试验的岩石统计损伤本构模型[J].岩土工程学报,2013, 35(11): 1965-1971.
[16]杨圣奇,徐卫亚,韦立德,等. 单轴压缩下岩石损伤统计本构模型与试验研究[J]. 河海大学学报(自然科学版),2004, 32(2): 200-203.
[17]WANG Z L, LI Y C, WANG J G. A Damage-softening Statistical Constitutive Model Considering Rock Residual Strength[J]. Computers & Geosciences, 2007, 33(1):1-9.
[18]DENG J, GU D. On a Statistical Damage Constitutive Model for Rock Materials[J]. Computers & Geosciences, 2011, 37(2): 122-128.