| 基于Nash 瞬时单位线法的渗透坡面汇流模拟 |
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| 引用本文： | 申红彬,徐宗学,李其军,张书函.基于Nash 瞬时单位线法的渗透坡面汇流模拟[J].水利学报,2016,47(5):708-713. |
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| 作者姓名： | 申红彬 徐宗学 李其军 张书函 |
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| 作者单位： | 北京市水科学技术研究院, 北京 100048;北京师范大学水科学研究院, 北京 100875,北京师范大学水科学研究院, 北京 100875,北京市水科学技术研究院, 北京 100048,北京市水科学技术研究院, 北京 100048 |
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| 基金项目： | 国家科技重大专项课题资助项目(2013ZX07304-001);国家自然科学基金项目(41301019) |
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| 摘 要： | 基于Nash瞬时单位线法,结合Horton土壤入渗经验模型,并考虑植被对降雨的截流作用,建立了渗透坡面汇流计算的数学模型。以矩形坡面为研究对象,基于其汇流时间-面积特性,结合等流时线法,推导建立了Nash瞬时单位线参数n、K的确定方法。其中,参数n的值为1.0,K的值与坡面汇流时间相等,相当于单一线性水库。应用本文建立的模型,对林地渗透坡面降雨径流进行计算,并与实测值进行比较。结果表明,计算值与实测值的变化趋势基本吻合,初步验证了本文方法的合理性。
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| 关 键 词： | 渗透坡面 Nash瞬时单位线 参数n、K 汇流模拟 |
| 收稿时间： | 2015/8/20 0:00:00 |
Simulation of rainfall runoff on permeable slope based on Nash instantaneous unit hydrograph |
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| SHEN Hongbin,XU Zongxue,LI Qijun and ZHANG Shuhan.Simulation of rainfall runoff on permeable slope based on Nash instantaneous unit hydrograph[J].Journal of Hydraulic Engineering,2016,47(5):708-713. |
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| Authors: | SHEN Hongbin XU Zongxue LI Qijun and ZHANG Shuhan |
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| Affiliation: | Beijing Water Science and Technology Institute, Beijing 100048, China;College of Water Sciences, Beijing Normal University, Beijing 100875, China,College of Water Sciences, Beijing Normal University, Beijing 100875, China,Beijing Water Science and Technology Institute, Beijing 100048, China and Beijing Water Science and Technology Institute, Beijing 100048, China |
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| Abstract: | Based on Nash instantaneous unit hydrograph, Horton infiltration equation and rainfall interception models,a math model for simulating the rainfall runoff on permeable slope is established. The time-area relation of basin is a concentrated expression of geomorphic characteristics. Based on the time-area relation and isochrones of watersheds, a determination method of parameters n and K for Nash instantaneous unit hydrograph is derived in rectangular basin. The value of parameter n is equal to 1.0, and the value of K is equal to the routing time. Finally, the model is applied and examined in simulation of rainfall-runoff on forested permeable slope in Miyun Reservoir watershed area in Beijing. The result shows that the trends of the calculated and measured values are consistent well. |
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| Keywords: | permeable slope Nash instantaneous unit hydrograph model parameters simulation of rainfall runoff |
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