| 边坡电渗模型试验及能量分析法数值模拟 |
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| 引用本文： | 庄艳峰,王钊,陈轮.边坡电渗模型试验及能量分析法数值模拟[J].岩土力学,2008,29(9):2409-2414. |
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| 作者姓名： | 庄艳峰 王钊 陈轮 |
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| 作者单位： | 1. 清华大学 水利水电工程系，北京 100084; 2. 清华大学 水沙科学与水利水电工程国家重点实验室, 北京 100084； 3. 武汉大学 土木建筑工程学院，武汉 430072 |
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| 摘 要： | 采用导电塑料制成的电动土工合成材料(EKG)进行了15.5 d的边坡电渗加固试验，测定了电渗之后土体等含水率分布曲线。试验结果表明，电渗加固效果是随时间从阳极到阴极逐渐扩展的，因此，越靠近阳极接入点的土体加固效果越好，越靠近阴极末端的土体加固效果越差。提出了电渗能量分析法，该方法仅要求黏性土体在排水固结开始的初始时刻是处于饱和状态，而在排水固结进行的过程中土体可以是饱和的，也可以是非饱和的。提出了基于能量分析法的电渗过程数值模拟方法，并对试验过程进行了数值模拟，模拟结果与实测结果能够较为吻合。
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| 关 键 词： | 电动土工合成材料 电渗 边坡加固 能量分析法 非饱和土 |
| 收稿时间： | 2006-12-23 |
Model test of slope reinforcement through electro-osmosis and its numerical simulation based on energy analysis method |
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| ZHUANG Yan-feng,WANG Zhao,CHEN Lun.Model test of slope reinforcement through electro-osmosis and its numerical simulation based on energy analysis method[J].Rock and Soil Mechanics,2008,29(9):2409-2414. |
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| Authors: | ZHUANG Yan-feng WANG Zhao CHEN Lun |
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| Institution: | 1. Department of Hydraulic and Hydropower Engineering, Tsinghua University, Beijing 100084, China; 2. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China; 3. School of Civil and Architectural Engineering, Wuhan University, Wuhan 430072, China |
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| Abstract: | Model test of slope reinforcement through electro-osmosis is conducted; the electro-kinetic geosynthetics (EKG) was adopted as electrodes in the test. Isolines of water content of the soil after 15.5 days of electro-osmosis were tested. Test result shows that electro-osmotic consolidated zone extended from anode to cathode gradually. Soil around EKG anode near the wire holder of electrode positive had the strongest effect of consolidation; on the contrary, soil around EKG cathode far away from the wire holder of electrode negative had the weakest effect of consolidation. Energy analysis method for electro-osmosis is presented. This method is applicable for both saturated and unsaturated soils during the drainage consolidation process, if only the soil is saturated at the beginning of consolidation process. Numerical simulation method for electro-osmosis based on energy analysis method is presented. Numerical simulation result shows good accordance with the tested result. |
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| Keywords: | electro-kinetic geosynthetics electro-osmosis slope reinforcement energy analysis method unsaturated soil |
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