| 地下水流衰退过程的数值解析 |
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| 引用本文： | 程平,程耕国.地下水流衰退过程的数值解析[J].武汉理工大学学报(交通科学与工程版),2006,30(5):814-816. |
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| 作者姓名： | 程平 程耕国 |
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| 作者单位： | 1. 武汉理工大学自动化学院,武汉,430070
2. 武汉科技大学信息科学与工程学院,武汉,430081 |
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| 摘 要： | 对降雨停止后渗透坡面的地下水流的衰退过程进行了数值解析计算，做出了间歇降雨所产生的地下水位的形状图．讨论了降雨方式、有效孔隙率、渗透系数以及斜坡地层的形状对地下水位衰退过程的影响．对于渗透坡面，仿真分析说明了降雨停止后，地下水的形状慢慢地滑落，地下水位减退．间歇降雨使坡面底端的水位上升导致小规模的滑坡从而引发大规模的滑坡．
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| 关 键 词： | 间歇降雨 地下水流的衰退 降雨方式 大规模的滑坡 |
| 收稿时间： | 2006-05-14 |
| 修稿时间： | 2006年5月14日 |
Numerical Analysis for the Decline of Subsurface Flow |
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| Cheng Ping,Cheng Gengguo.Numerical Analysis for the Decline of Subsurface Flow[J].journal of wuhan university of technology(transportation science&engineering),2006,30(5):814-816. |
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| Authors: | Cheng Ping Cheng Gengguo |
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| Institution: | 1.School of Automation, Wuhan University of Technology, Wuhan 430070;2.College of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081 |
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| Abstract: | The decline of subsurface flow in soil slope due to rainfall infiltration has been studied with nu- merical analysis. The shapes of ground water levels for development and decline of subsurface flow induced by intermittent rainfall have been shown. In numerical calculations, the effects of rainfall pattern, effective porosity, coefficient of permeability and shape of slope layer to the decline of subsurface flow are examined. Simulation analyses for steep slope indicate the shape of subsurface flow slides downward decreasingly and the ground water level declines slowly after the stop of rainfall. Intermittent rainfall tends to rise up the ground water level at the down slope so that it generates a small scale landslide, which will trigger a large-scale landslide. |
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| Keywords: | intermittent rainfall decline of subsurface flow rainfall pattern large-scale landslide |
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