| 考虑温度和体积应力的分数阶蠕变损伤Burgers模型 |
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| 引用本文： | 薛东杰,路乐乐,易海洋,武志德,张庆森,张泽朋. 考虑温度和体积应力的分数阶蠕变损伤Burgers模型[J]. 岩石力学与工程学报, 2021, 0(2): 315-329 |
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| 作者姓名： | 薛东杰 路乐乐 易海洋 武志德 张庆森 张泽朋 |
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| 作者单位： | 中国矿业大学（北京）力学与建筑工程学院;重庆大学煤矿灾害动力学与控制国家重点实验室;华北科技学院建筑工程学院;中国石油勘探开发研究院廊坊分院 |
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| 基金项目： | 国家自然科学基金青年基金资助项目(51504257);国家重点研发计划项目(2016YFC0600704);中央高校基本科研业务经费青年越崎学者项目(2018B051616)。 |
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| 摘 要： | 盐腔是石油、天然气和高放射性核废料深地储存的理想屏蔽围岩,考虑到深地盐岩地层中温度和体积应力联合影响,基于细观概率体元强度的威布尔(Weibull)分布构建损伤变量,利用Drucker-Prager强度准则描述微观线弹性脆性破坏,引入考虑塑性损伤的广义胡克定量描述样品尺度损伤,从而建立三轴压缩条件下静态本构模型.进一步...
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| 关 键 词： | 岩石力学 全阶段建模 三轴压缩蠕变 分数阶蠕变 Burgers模型 |
A fractional Burgers model for uniaxial and triaxial creep of damaged salt-rock considering temperature and volume-stress |
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| XUE Dongjie,LU Lele,YI Haiyang,WU Zhide,ZHANG Qingsen,ZHANG Zepeng. A fractional Burgers model for uniaxial and triaxial creep of damaged salt-rock considering temperature and volume-stress[J]. Chinese Journal of Rock Mechanics and Engineering, 2021, 0(2): 315-329 |
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| Authors: | XUE Dongjie LU Lele YI Haiyang WU Zhide ZHANG Qingsen ZHANG Zepeng |
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| Affiliation: | (School of Mechanics and Civil Engineerings China University of Mining and Technology(Beijing),Beijing 100083,China;State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400030,China;Architectural Engineering College North China Institute of Science and Technology,Langfang,Hebei 065201,China;Branch of Langfang.Research Institute of Petroleum Exploration and Developments Langfang,Hebei 065007,China) |
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| Abstract: | Salt cavern is an ideal shielding rock for deep storage of oil,natural gas and high-level radioactive nuclear waste. Considering the combined influence of temperature and volume-stress in deep,a damage variable is proposed based on the Weibull distribution of random failure of meso-scale element. The Drucker-Prager criterion is used to describe the brittle failure in the linear deformation at meso-scale,and the generalized Hook’s Law considering the plastic damage is introduced to describe the sample-scale damage. As a result,a static constitutive model under triaxial compression is effectively established. Furthermore,introducing both the static constitutive model and the nonlinear fractional viscosity dashpot into Burgers model,a fractional Burgers model with creep damage considering the temperature and the volume stress is effectively established. The results show that the new model,sensitive to the temperature and the volume stress,can well simulate the creep deformation in whole evolution,especially for the accelerated creep deformation. |
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| Keywords: | rock mechanics full-stage modeling triaxial creep fractional creep Burgers model |
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