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| FDEM降雨模型对路基渗流影响分析 | |
| 引用本文： | 李爱民,刘小平,何志攀.FDEM降雨模型对路基渗流影响分析[J].勘察科学技术,2007(6):14-17. |
| 作者姓名： | 李爱民 刘小平 何志攀 |
| 作者单位： | 1. 广东省电力设计研究院,广州市,510600 2. 湖南大学岩土工程研究所,长沙市,410082 3. 国家电力公司昆明勘测设计研究院,昆明市,650051 |
| 摘 要： | 该文研究FDEM降雨模型下非饱和土路基渗流及路基含水量的变化。基于路基内部水运动原理分析了降雨对路基的浸润作用;探讨FDEM降雨模型雨水入渗路基机理,推导出降雨作用下雨水入渗路基深度公式;研究了降雨作用下非饱和土路基的饱和-非饱和流。基于一般渗流方程的基础上,初步推出了降雨作用下非饱和土路基的饱和-非饱和渗流公式。分析结果表明,降雨作用下的路基渗流的深度可达100cm以上,含水量的变化可达15%。 |
| 关 键 词： | 含水量 非饱和土路基 FDEM降雨模型 数值模拟 |
| 修稿时间： | 2007年2月23日 |
Analysis on Seepage of Unsaturated Soil Roadbed with FDEM Rainfall Model |
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| Li Aimin,Liu Xiaoping,He Zhipan.Analysis on Seepage of Unsaturated Soil Roadbed with FDEM Rainfall Model[J].Site Investigation Science and Technology,2007(6):14-17. | |
| Authors: | Li Aimin Liu Xiaoping He Zhipan |
| Abstract: | The seepage of unsaturated soil roadbed and the change of water content of the roadbed are studied with FDEM rainfall model.Based on the principle of interior water movement in the roadbed,the seepage effect of rainfall to the roadbed is analyzed;the mechanism of FDEM rainfall seepage to the roadbed is discussed,and the formulae of seepage depth to the roadbed with different rainfall models are derived;In addition,saturated-unsaturated seepage in the unsaturated roadbed is also studied.And the formulae of saturated-unsaturated seepage are deduced based on the general seepage equations.Primary conclusion indicates that the seepage depth deduced by rainfall could reach over 100cm and the variation of water content reaches 15%. |
| Keywords: | water content unsaturated soil roadbed FDEM rainfall model numerical simulation |
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