| 大坝渗流基流的分析模型研究 |
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| 引用本文： | 顾冲时,胡灵芝,张乾飞.大坝渗流基流的分析模型研究[J].岩土力学,2005,26(7):1033-1037. |
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| 作者姓名： | 顾冲时 胡灵芝 张乾飞 |
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| 作者单位： | 河海大学 水利水电工程学院, 江苏 南京 210098 |
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| 基金项目： | 国家自然科学基金重点项目(No.50139030)，国家重点基础研究发展规划资助项目(NO.2002CB412707)，教育部博士点基金(No.20020294005)，教育部“跨世际优秀人才培养计划”基金资助项目(No.2003512643)。 |
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| 摘 要： | 深入研究了库水位等变化对渗流变化滞后效应，探讨了渗流的滞后模型，利用该模型进行优化分析，确定了渗流滞后天数和影响天数以及上游有效水深等参数；并借助于上游有效水深，将非稳定渗流计算问题转化为稳定渗流的求解问题，简化了计算；在此基础上，结合实测资料及渗流分析，建立了大坝渗流基流的分析模型。算例表明：建立的模型能较好地反映基流的变化性态。
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| 关 键 词： | 大坝 渗流 滞后 基流 模型 |
| 文章编号： | 1000-7598-(2005)07-1033-05 |
| 收稿时间： | 2004-02-25 |
| 修稿时间： | 2004年2月25日 |
An analytic model for base flow of dam seepage |
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| GU Chong-shi,HU Ling-zhi,Zhang Qian-fei.An analytic model for base flow of dam seepage[J].Rock and Soil Mechanics,2005,26(7):1033-1037. |
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| Authors: | GU Chong-shi HU Ling-zhi Zhang Qian-fei |
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| Institution: | College of Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | The hysteresis effect of seepage variation caused by reservoir water level variation is deeply studied; and then a hysteresis seepage model is presented. By use of this model and optimization analysis,hysteresis days and effective water depth upstream are determined. By introducing effective water depth upstream, an instability seepage problem is converted to a stability seepage one. Based on this simplification and combining measured data and seepage analysis, an analytic model for base flow of dam seepage is proposed. The example shows that the model can simulate behavior of base flow. |
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| Keywords: | dam seepage hysteresis base flow model |
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