| 软弱结构面剪切蠕变特性与含水率关系研究 |
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| 引用本文： | 李鹏,刘建,朱杰兵,贺怀建.软弱结构面剪切蠕变特性与含水率关系研究[J].岩土力学,2008,29(7):1865-1871. |
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| 作者姓名： | 李鹏 刘建 朱杰兵 贺怀建 |
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| 作者单位： | 1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,武汉,430071
2. 长江科学院水利部岩土力学与工程重点实验室,武汉,430010 |
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| 基金项目： | 国家自然科学基金
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国家自然科学基金
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湖北省自然科学基金 |
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| 摘 要： | 软弱结构面往往控制着岩体的蠕变变形,含水率又是影响软弱结构面蠕变特性的重要因素,通过开展不同含水率条件下砂岩软弱结构面剪切蠕变试验,得到了不同含水率条件下剪切蠕变曲线,并考虑加载历史对试验曲线进行了修正.在此基础上,通过模型辨识选取Burgers模型描述砂岩软弱结构面蠕变的黏弹性特性.分析了含水率对砂岩软弱结构面剪切蠕变特性的影响,并对含水率影响软弱结构面剪切蠕变特性的机制进行了探讨.
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| 关 键 词： | 含水率 砂岩 软弱结构面 剪切蠕变试验 Burgers模型 软弱结构面 剪切蠕变试验 蠕变特性 不同含水率 关系研究 sandstone structural plane weak creep behavior shear water content effects 机制 分析 弹性特性 描述 模型辨识 Burgers 选取 修正 |
| 收稿时间： | 2006-09-14 |
Research on effects of water content on shear creep behavior of weak structural plane of sandstone |
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| LI Peng,LIU Jian,ZHU Jie-bing,HE Huai-jian.Research on effects of water content on shear creep behavior of weak structural plane of sandstone[J].Rock and Soil Mechanics,2008,29(7):1865-1871. |
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| Authors: | LI Peng LIU Jian ZHU Jie-bing HE Huai-jian |
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| Institution: | 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2.Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Yangtze River Scientific Research Institute, Wuhan 430010, China |
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| Abstract: | Creep behavior of weak structural plane plays an important role in the creep deformation of rock mass. Water content of the fillings is a significant factor influencing the creep properties of the weak structural plane. A series of shear creep tests on the weak structural plane of sandstone with different water contents are conducted. The curves of the shear creep deformation vs. time under different water contents of the fillings are derived. The effects of water content on the shear creep behavior of weak structural plane of sandstone are analyzed. Based on the test results, the creep model of the weak structural plane is identified; and Burgers model is derived to describe the creep behavior of the weak structural plane. Moreover, the influences of water contents on the parameters of the creep model are further studied; and the creep mechanism of the weak structural plane of sandstone under different water contents of the fillings is presented. |
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| Keywords: | water content sandstone weak structural plane shear creep test Burgers model |
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