| 边坡降雨入渗与坡面径流影响因素敏感性分析 |
| |
| 引用本文： | 田东方,刘德富,周明涛.边坡降雨入渗与坡面径流影响因素敏感性分析[J].水力发电,2010,36(4). |
| |
| 作者姓名： | 田东方 刘德富 周明涛 |
| |
| 作者单位： | 三峡大学水利与环境学院,湖北宜昌,443002 |
| |
| 基金项目： | 国家自然基金重点项目 |
| |
| 摘 要： | 影响边坡降雨入渗的因素很多,如雨强、土体渗透性、土体初始含水率、坡度、坡面糙率等。以非饱和降雨入渗与坡面径流有限元耦合模型为计算方法,应用正交试验设计数值试验,从坡面产流时间tp、坡脚径流水深h、坡体入渗量Q和入渗量与降雨量之比C的角度,对上述五种影响因素进行敏感性分析。结果表明,影响tp的主要因素是雨强、土体渗透性;影响h的主要因素依次是雨强、坡面糙率、土体渗透性;对Q影响较大的因素依次是土体渗透性、雨强、初始含水率;对C有较大影响的依次是土体渗透性、雨强、初始体积含水率。
|
| 关 键 词： | 降雨入渗 坡面径流 敏感性分析 耦合 数值模拟 |
Sensitivity Analysis on Effect Factors of Rainfall Infiltration and Runoff of Slope |
| |
| Tian Dongfang,Liu Defu,Zhou Mingtao.Sensitivity Analysis on Effect Factors of Rainfall Infiltration and Runoff of Slope[J].Water Power,2010,36(4). |
| |
| Authors: | Tian Dongfang Liu Defu Zhou Mingtao |
| |
| Affiliation: | Tian Dongfang,Liu Defu,Zhou Mingtao(College of Hydraulic & Environmental Engineering,China Three Gorges University,Yichang Hubei 443002) |
| |
| Abstract: | Many factors affect rainfall infiltration of slope,such as rainfall intensity,soil permeability,soil initial water content,slope gradient and surface roughness.With coupling model of non-saturated rainfall infiltration and slope runoff as calculating tool,and orthogonal experiment as sensitivity analysis tool,the effect of above five factors on runoff emergence time(tp),water depth of slope toe(h),infiltration(Q) and the ratio of infiltration and total rainfall(C) were studied.The results show that the cont... |
| |
| Keywords: | rainfall infiltration slope runoff sensitivity analysis coupling numerical simulation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
