| 堤外水位升降条件下非稳定渗流模型试验研究 |
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| 引用本文： | 詹美礼,踪金梁,严飞,罗玉龙,盛金昌.堤外水位升降条件下非稳定渗流模型试验研究[J].岩土力学,2012,33(Z1):91-96. |
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| 作者姓名： | 詹美礼 踪金梁 严飞 罗玉龙 盛金昌 |
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| 作者单位： | 河海大学 水利水电学院，南京 210098 |
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| 基金项目： | 国家自然科学基金项目资助(No.51079039,No.51009053) |
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| 摘 要： | 建立堤坝饱和-非饱和渗流测试系统，对在水位骤升和水位骤降条件下堤坝进行试验研究。主要测试堤坝模型内各点的非饱和基质吸力，同时观察记录试验过程中实验室内的气温和湿度，探讨水位升降条件下非饱和区负压的变化规律及其影响因素。研究发现，堤坝模型中各点的吸力不仅与水位变化、各点所处的位置有关，同时也受大气温度、湿度、蒸发等外界环境因素的影响；水位变化因素占优还是蒸发因素占优，决定着堤坝非饱和区负压的变化发展方向
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| 关 键 词： | 非稳定渗流 基质吸力 堤坝 水位骤升 水位骤降 模型试验 |
| 收稿时间： | 2012-05-08 |
Unsteady seepage model test of dam under water level fluctuation |
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| ZHAN Mei-li,ZONG Jin-liang,YAN Fei,LUO Yu-long,SHENG Jin-chang.Unsteady seepage model test of dam under water level fluctuation[J].Rock and Soil Mechanics,2012,33(Z1):91-96. |
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| Authors: | ZHAN Mei-li ZONG Jin-liang YAN Fei LUO Yu-long SHENG Jin-chang |
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| Institution: | College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | The saturated-unsaturated seepage test system is established in order to study seepage under water level sudden raise and rapid drawdown.The matric suction in unsaturated zone within the dam model is tested.During the test,the atmospheric temperature and humidity of the laboratory are also recorded at the same time.The matric suction evolution under the changing water lever and its influencing factors are discussed.The results show that the matric suction in the model is not only related to the water level changes and the position of measuring points,but also affected by the impact of the atmospheric temperature,humidity,evaporation and other external environmental factors.The dominant factor between the changes of water level and evaporation,determines the matric suction evolution in the unsaturated zone. |
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| Keywords: | unsteady seepage matric suction dam sudden raise of water lever rapid drawdown of water lever model test |
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