| 二滩高拱坝坝基渗流场的反演分析 |
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| 引用本文： | 崔皓东,朱岳明.二滩高拱坝坝基渗流场的反演分析[J].岩土力学,2009,30(10):3194-3199. |
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| 作者姓名： | 崔皓东 朱岳明 |
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| 作者单位： | 1.长江科学院 水利部岩土力学与工程重点实验室，武汉 430010；2.河海大学 水利水电工程学院，南京 210098 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 研究运行期高坝坝基渗流特性时，渗流场参数的获取是难点之一。针对二滩工程，利用三维渗流场有限元精细求解技术以及遗传算法等方法和理论，建立坝基渗流场反演模型；选择坝基典型渗压计测点作为实测点，通过特定时刻库水位对应渗流场的反演获得坝基渗透系数，再利用不同时刻点库水位对应的渗流场进行验证。分析结果表明，渗流场的反演结果是合理的，可作为研究运行期高拱坝坝基渗流场真实工作性态的依据。
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| 关 键 词： | 二滩坝基 渗透系数 反演 有限元 |
| 收稿时间： | 2009-04-27 |
Back analysis of seepage field of Ertan high arch dam foundation |
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| CUI Hao-dong,ZHU Yue-ming.Back analysis of seepage field of Ertan high arch dam foundation[J].Rock and Soil Mechanics,2009,30(10):3194-3199. |
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| Authors: | CUI Hao-dong ZHU Yue-ming |
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| Institution: | 1. Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Yangtze River Scientific Research Institute, Wuhan 430010, China; 2. College of Water Conservancy & Hydropower Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | It is difficult to obtain the seepage field parameters of dam foundation while the seepage characteristic of high arch dam foundation is studied during operation period. According to Ertan arch dam foundation, a back analysis model is proposed with the genetic algorithm theory and the technology of three-dimensional finite elements for solving the seepage field. The typical positions of osmometers are used as the actual measurement points, the permeability coefficient of dam foundation seepage field is retrieved in special time, meanwhile, the parameters are testified by the seepage field at different time points. The analytical results show that the inversion results of the seepage field are reasonable; and the results can be used to study the real behavior of seepage field of high arch dam foundation during operation period. |
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| Keywords: | Ertan dam foundation permeability coefficient back analysis finite elements |
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