| 尾砂胶结充填体蠕变模型及在FLAC3D 二次开发中的实验研究 |
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| 引用本文： | 赵奎,何文,熊良宵,杨欣,王晓军.尾砂胶结充填体蠕变模型及在FLAC3D 二次开发中的实验研究[J].岩土力学,2012,33(Z1):112-116. |
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| 作者姓名： | 赵奎 何文 熊良宵 杨欣 王晓军 |
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| 作者单位： | 1. 江西理工大学 工程研究院，江西 赣州 341000；2. 江西理工大学 钨资源高效开发及应用技术教育部工程研究中心，江西 赣州 341000； 3. 宁波大学 建筑工程与环境学院，浙江 宁波 315211；4. 重庆大学 土木工程学院，重庆 400030； 5. 江西理工大学 资源与环境工程学院，江西 赣州 341000 |
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| 基金项目： | 国家自然科学基金资助项目(No.51064010,No.41002108);国家科技支撑计划项目子课题资助(No.2008BAB32B03);国家重点基础研究发展计划资助项目(No.2011cb411913) |
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| 摘 要： | 关于岩石蠕变特性的研究已有诸多成果，但对胶结充填体的蠕变特性还缺乏系统地研究。在室内充填体单轴蠕变试验的基础上，利用Hoek-Kelvin模型表征充填体的蠕变特性，运用粒子群优化算法，对选用的蠕变模型的参数进行辨识，并研究各蠕变参数对应力水平的敏感程度。研究结果表明，在不同分级应力水平加载下，弹性模量EH和黏滞系数η变化较小，而参数EK对应力水平变化较敏感。利用FLAC3D软件二次开发所建立的蠕变模型，用开发的模型进行分级加载蠕变的数值模拟，计算结果与试验数据吻合。
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| 关 键 词： | 胶结充填体 蠕变模型 粒子群优化算法 FLAC3D |
| 收稿时间： | 2012-02-14 |
Testing study of creep model for tailing cemented backfill and its secondary development based on FLAC3D |
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| ZHAO Kui,HE Wen,XIONG Liang-xiao,YANG Xin,WANG Xiao-jun.Testing study of creep model for tailing cemented backfill and its secondary development based on FLAC3D[J].Rock and Soil Mechanics,2012,33(Z1):112-116. |
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| Authors: | ZHAO Kui HE Wen XIONG Liang-xiao YANG Xin WANG Xiao-jun |
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| Institution: | 1.Engineering Research Institute,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China;2.Engineering Research Center of High-efficiency Development and Application Technology of Tungsten Resources of Ministry of Education,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China;3.Faculty of Architectural,Civil Engineering and Enviroment,Ningbo University,Ningbo,Zhejiang 315211,China;4.College of Civil Engineering,Chongqing University,Chongqing 400030,China;5.School of Resources & Environment Engineering,Jiangxi University of Science and Technology,Ganzhou,Jiangxi 341000,China) |
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| Abstract: | Great many results about the creep properties of rock have been achieved,while few reports on the cemented backfill’ s creep characters were obtained.In this paper,creep property of cemented backfill is characterized by Hoek-Kelvin model.Cemented backfill creep experiments are firstly conducted in the laboratory,then the parameters of Hoek-Kelvin creep model are identified using particle swarm optimization algorithm.Meanwhile,the sensitivity of creep parameters to the stress level is studied.Results show that the numerical value of EH and η vary little at different loading stress levels,and EK is very sensitive to the change of loading stress level.The proposed creep model for backfill is developed with the software FLAC3D;and it has been used to numerically simulate multi-stage loading on cemented backfill.The numerical results agree well with the experimental ones. |
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| Keywords: | cemented backfill creep model particle swarm optimization algorithm FLAC3D |
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