﻿ 基于霍顿下渗能力曲线的流域产汇流计算 Runoff Yield and Conflux Model Based on Horton Infiltration Capacity Curve

Journal of Water Resources Research
Vol.06 No.04(2017), Article ID:21344,7 pages
10.12677/JWRR.2017.64038

Runoff Yield and Conflux Model Based on Horton Infiltration Capacity Curve

Shuangyan Jin, Xinhui Jiang

Hydrology Bureau of Yellow River Conservancy Commission, Zhengzhou Henan

Received: Jun. 27th, 2017; accepted: Jul. 5th, 2017; published: Jul. 12th, 2017

ABSTRACT

Flood data from 1978 to 2014 at Shenjiawan hydrology station, Jialuhe basin located in the Shanxi-Shaanxi Region of the middle Yellow River, are selected in this study. Based on the Horton infiltration capacity curve and ArcGIS, the stable infiltration rate is calculated, and the runoff yield and conflux model is established to simulate history floods. The observed rainfall, runoff and antecedent precipitation are used to analyze the infiltration capacity, and the stable infiltration rate is 3.1 mm/h through the relation of f~W0~Ft. The watershed runoff yield and conflux model is composed of four parts, among which, the overland flow module adopts instantaneous unit method and the river flow module adopts Muskingum flow algorithm. The history flood simulation results are good: the average error of peak time is about 0.05 hour; the error of peak discharge is in the forecasting allowable range, and the deterministic coefficient is 0.77.

Keywords:Infiltration Capacity, Runoff Yield and Conflux Model, Muskingum Method, Flood Simulation, Jialuhe River

1. 引言

2. 研究区及其基础数据

2.1. 研究区概况

2.2. 单元划分

2.3. 基础资料

3. 霍顿下渗能力曲线分析

3.1. 采用方法

(1) 前期影响雨量

(1)

Figure 1. River system and station layout in Jialuhe basin

Table 1. Geographical parameter of each unit in Jialuhe basin

(2) 霍顿下渗公式

(2)

(3)

(3) 稳定下渗率

(4)

3.2. 计算结果

4. 产汇流模型

4.1. 模型结构

Figure 2. Relationship of f~W0~Ft in Jialuhe

4.2. 计算结果

(1) 马斯京根法汇流参数

(2) 产汇流参数率定及洪水模拟

(3) 精度评定

Figure 3. Model structure of watershed runoff generation and concentration

Table 2. Confluence parameter of Muskinggum method in Jialuhe basin

Table 3. Runoff yield and concentration parameter in Jialuhe basin

Figure 4. Flood simulation in 1986 in Jialuhe basin

Table 4. Accuracy assessment of flood simulation in Jialuhe basin

5. 结论

(1) 选取黄河中游山陕区间右岸的一级支流佳芦河为研究对象，采用1978~2014年入黄水文站申家湾的洪水资料，基于霍顿下渗能力曲线，建立流域f~W0~Ft关系，通过分析计算得出佳芦河流域的稳定下渗率为3.1 mm/h。

(2) 构建产汇流模型，分别采用瞬时单位线法和马斯京根分段连续演算法研究坡面汇流和河道汇流，产流模块采用一般性产流模型，求出产汇流参数。用率定的产汇流参数对历史洪水进行模拟，模拟效果较好，洪峰误差均在预报允许范围之内，平均确定性系数为0.77。

Runoff Yield and Conflux Model Based on Horton Infiltration Capacity Curve[J]. 水资源研究, 2017, 06(04): 317-323. http://dx.doi.org/10.12677/JWRR.2017.64038

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