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| STUDY OF ROCK DAMAGE CONSTITUTIVE MODEL AND DISCUSSION OF ITS PARAMETERS BASED ON HOEK-BROWN CRITERION |
| SHI Chong 1，2，JIANG Xinxing1，2，ZHU Zhende1，2，HAO Zhenqun1，2 |
| (1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering，Hohai University，Nanjing，Jiangsu 210098，China；2. Research Institute of Geotechnical Engineering，Hohai University，Nanjing，Jiangsu 210098，China) |
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Abstract Based on Hoek-Brown criterion and hypothesis of rock particles obeying Weibull random distribution，the damage parameter is modified reasonably considering the characteristic of rock post-peak softening. The three-dimensional damage constitutive model reflecting the whole process of rock fracture is established；and the test is conducted to verify the validity of model. The test results show that the model results are in good agreement with test results. On this basis，the influences of Weibull distribution parameters and Hoek-Brown criterion parameters on the rock damage constitutive model are discussed；and it will provide good reference to the engineering applications.
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Received: 23 April 2010
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| [1] KRAJCINOVIC D，SILVA M A G. Statistical aspects of the continuous damage theory[J]. International Journal of Solids and Structures，1982，18(7)：551–562.
[2] 唐春安. 岩石破裂过程中的灾变[M]. 北京：煤炭工业出版社，1993. (TANG Chun′an. Catastrophe in rock failure process[M]. Beijing：China Coal Industry Publishing House，1993.(in Chinese))
[3] 梁正召. 三维条件下的岩石破裂过程分析及其数值试验方法研究[博士学位论文][D]. 沈阳：东北大学，2005.(LIANG Zhengzhao. Three-dimensional numerical modelling of rock failure process[Ph. D. Thesis][D]. Shenyang：Northeastern University，2005.(in Chinese))
[4] 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.(YANG Shengqi，XU Weiya，WEI Lide，et al. Rock damage constitutive model and experimental study under uniaxial compression[J]. Hohai University：Natural Science，2004，32(2)：200–203.(in Chinese))
[5] 吴 政，张成娟. 单向荷载作用下岩石损伤模型及其力学特性研究[J]. 岩石力学与工程学报，1996，15(1)：55–61.(WU Zheng，ZHANG Chengjuan. Unidirectional loading and mechanical damage model of rock properties[J]. Chinese Journal of Rock Mechanics and Engineering，1996，15(1)：55–61.(in Chinese))
[6] 杨圣奇，徐卫亚，苏承东. 考虑尺寸效应的岩石损伤统计本构模型研究[J]. 岩石力学与工程学报，2005，24(24)：4 484–4 490.(YANG Shengqi，XU Weiya，SU Chengdong. Study of statistical damage constitutive model of rock considering scale effect[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(24)：4 484–4 490.(in Chinese))
[7] 徐卫亚，韦立德. 岩石损伤统计本构模型的研究[J]. 岩石力学与工程学报，2002，21(6)：787–791.(XU Weiya，WEI Lide. Study on statistical damage constitutive model of rock[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(6)：787–791.(in Chinese))
[8] 陈忠辉，傅宇方，唐春安. 岩石破裂声发射过程的围压效应[J]. 岩石力学与工程学报，1997，16(1)：65–70.(CHEN Zhonghui，FU Yufang，TANG Chun′an. Confining pressure effect on acoustic emissions during rock failure[J]. Chinese Journal of Rock Mechanics and Engineering，1997，16(1)：65–70.(in Chinese))
[9] 刘齐建，杨林德，曹文贵. 岩石统计损伤本构模型及其参数反演[J]. 岩石力学与工程学报，2005，24(4)：616–621.(LIU Qijian，YANG Linde，CAO Wengui. Statistical damage constitutive model for rock and back analysis of its parameter[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(4)：616–621.(in Chinese))
[10] 秦跃平，张金峰，王 林. 岩石损伤力学理论模型初探[J]. 岩石力学与工程学报，2003，22(4)：646–650.(QIN Yueping，ZHANG Jinfeng，WANG Lin. Preliminary discussion on theoretical model of rock damage mechanics[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(4)：646–650.(in Chinese))
[11] 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.(CAO Wengui，FANG Zulie，TANG Xuejun. A study of statistical constitutive model for soft and damage rock[J]. Chinese Journal of Rock Mechanics and Engineering，1998，17(6)：628–633.(in Chinese))
[12] 曹文贵，赵明华，唐学军. 岩石破裂过程的统计损伤模拟研究[J]. 岩土工程学报，2003，25(2)：184–187.(CAO Wengui，ZHAO Minghua，TANG Xuejun. Study on simulation of statistical model in the full process of rock failure[J]. Chinese Journal of Geotechnical Engineering，2003，25(2)：184–187.(in Chinese))
[13] 曹文贵，赵明华，刘成学. 基于Weibull分布的岩石损伤软化模型及其修正方法研究[J]. 岩石力学与工程学报，2004，23(19)：3 226– 3 231.(CAO Wengui，ZHAO Minghua，LIU Chengxue. Study on the model and its modifying method for rock softening and damage based on Weibull random distribution[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(19)：3 226–3 231.(in Chinese))
[14] HOEK E. BROWN E T. Underground excavations in rock[M]. Hereford：Austin and Sons Ltd.，1988.
[15] 胡海浪，黄秋枫. Hoek-Brown强度准则中m，s取值对岩体强度影响研究[J]. 灾害与防治工程，2007，(2)：31–37.(HU Hailang，HUANG Qiufeng. Study of impacts of m，s values on rock mass strength in Hoek-Brown criterion[J]. Disaster and Control Engineering，2007，(2)：31–37.(in Chinese)) |
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2011, Vol. 30 
