| 水-气二相流模型分析水位下降情况的坝坡稳定性 |
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| 引用本文： | 张晓悦,朱岳明. 水-气二相流模型分析水位下降情况的坝坡稳定性[J]. 三峡大学学报(自然科学版), 2008, 30(6) |
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| 作者姓名： | 张晓悦 朱岳明 |
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| 作者单位： | 河海大学,水利水电工程学院,南京,210098 |
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| 摘 要： | 水库水位变化会显著改变坝坡的稳定状态,通过建立水-气二相流模型,模拟库水位下降情况下坝体的饱和-非饱和渗流,为了考虑相态随时间和空间的改变,建立主要变量随相态变化的判断准则.利用模拟结果分析某均质土坝的稳定性,研究表明,库水位下降时,空气对渗流起到阻碍作用,坝体的负孔隙气压力增大,基质吸力对坝坡稳定所起的作用明显增大,在坝坡稳定分析中应当全面考虑空气阻力以及基质吸力的作用.
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| 关 键 词： | 水-气二相流 水位下降 基质吸力 坝坡稳定 |
Analysis of Dam Slope Stability by Water-air Two-phase Flow Model under Water Level Drawdown Condition |
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| Zhang Xiaoyue,Zhu Yueming. Analysis of Dam Slope Stability by Water-air Two-phase Flow Model under Water Level Drawdown Condition[J]. Journal of China Three Gorges University(Natural Sciences), 2008, 30(6) |
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| Authors: | Zhang Xiaoyue Zhu Yueming |
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| Affiliation: | Zhang Xiaoyue Zhu Yueming (College of Water Conservancy & Hydropower Engineering,Hohai Univ.,Nanjing 210098,China) |
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| Abstract: | The stable state of dam slope will be significantly changed while the water level of the reservoir changes.A water-air two-phase flow model is established to simulate the saturated-unsaturated seepage of the dam under water level lowing condition.Phase state is variable in space and time,in order to take this into account,a judgment criterion for the primary variables to change accordingly with the phase state is given.Using the simulation results,the stability of a homogeneous earth dam is analyzed;and acc... |
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| Keywords: | water-air two-phase flow water lowering matric suction dam slope stability |
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