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基于经验单位线的丰乐河流域洪水预报
Flood Forecasting of Fengle River Basin on Unit Hydrograph Method

DOI: 10.12677/JWRR.2016.53027, PP. 211-221

Keywords: 洪水预报，经验单位线，新安江模型，遗传算法，丰乐河
Flood Forecasting, Unit Hydrograph, Xinanjiang Model, Genetic Algorithm, Fengle River

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Abstract:

经验单位线法是洪水模拟与预报中推求地面净雨汇流过程常用的方法之一。以丰乐河流域为研究区域，基于该流域1984年至2013年的降雨、径流和蒸发资料，选取了30场洪水，采用三水源新安江模型进行次洪的产流与分水源计算，以地面径流与壤中流作为直接径流，利用经验单位线法和线性水库法分别模拟直接径流和地下径流的汇流过程，通过合成直接径流与地下径流，构建了丰乐河流域洪水模拟模型。以新安江模型计算的14场率定洪水的径流深与实测径流深平均误差最小化为目标，采用遗传算法确定了新安江模型的参数。采用分析与试错相结合的方法推求了直接径流的汇流经验单位线。采用大洪水推求的单位线(980915场次)对30场洪水进行模拟，得14场率定洪水的径流深平均相对误差为7%、平均洪峰误差为8%、平均峰现误差为2.57h，合格率分别为93%、93%和86%，平均确定性系数为0.91；16场检验洪水的径流深、洪峰和峰现的误差分别为8%、9%和3.38h，合格率分别为88%、94%和88%，平均确定性系数为0.89。表明基于新安江模型与经验单位线所构建的模型可用于该流域的洪水预报，计算精度较高。采用基于大洪水推求的单位线进行中小洪水汇流计算时的精度较低，反之亦然。推求了相应于大、中小洪水的经验单位线对大、中小洪水分别进行汇流计算，可获得较高的模拟精度。建议在该流域根据形成次洪的降水量的大小，采用不同的经验单位线对洪水进行预报，以提高预报精度。
To calculate ground net rainfall runoff, unit hydrograph method is one of the common methods for flood simulation and prediction. Taking Fengle River basin as a study case, 30 floods were selected based on data of its rainfall, flow and evaporation from 1984 to 2013. The Xinanjiang model was used to calculate the runoff and the separate water sources. Considering surface runoff and interflow as the direct runoff, unit hydrograph and the linear reservoir methods were adopted to simulate the confluence process of the direct runoff and underground runoff respectively. Then flood forecasting model for Fengle River basin was established. With the goal of minimizing the average absolute error between the calculated runoff depths with Xinanjiang model and the observed runoff depths of 14 floods as calibrated samples, the genetic algorithm was adopted to calibrate the parameters of Xinanjiang model. The unit hydrograph of flood confluence of direct runoff was quantified by the method based on the combination of analytical and trial and error approaches. Then 30 floods were simulated with the unit hydrograph acquired through flood data of No. 980915. According to the results, the average relative error of the runoff depth, the error of average flood peak and the peak time of 14 calibrated floods are 7%, 8% and 2.57 h respectively, with the qualification rate are 93%, 93% and 86% respectively, and the average deterministic coefficient is 0.91. The error of the runoff depth, flood peak and the peak time of the 16 validated floods are 8%, 9% and 3.38 h respectively, with the qualification rate are 88%, 94% and 88% respectively, and the average deterministic coefficient is 0.89. Practical applications of the flood forecasting for Fengle River water- shed show that, the model based on the Xinanjiang model and the unit hydrograph can be used to forecast the flood occurred within

References

[1]  阚光远, 刘志雨, 李致家, 姚成, 周赛. 新安江产流模型与改进的BP汇流模型耦合应用[J]. 水科学进展, 2012, 23(1): 21-28. KAN Guangyuan, LIU Zhiyu, LI Zhijia, YAO Cheng and ZHOU Sai. Coupling Xinanjiang runoff generation model with im-proved BP flow concentration model. Advances in Water Science, 2012, 23(1): 21-28. (in Chinese)
[2]  邹文安, 任建业. 地区综合法在洪水设计中的应用[J]. 水资源研究, 2012, 33(2): 32-35. ZOU Wenan, REN Jianye. Application of method of regional synthesized in flood design. Journal of Water Resources Research, 2012, 33(2): 32-35. (in Chinese)
[3]  MUHAMMAD, M. A., ABDUL, R. G. and SAJJAD, A. Estimation of Clark’s instantaneous unit hydrograph parameters and development of direct surface runoff hydrograph. Water Resources Management, 2009, 23(12): 2417-2435.
http://dx.doi.org/10.1007/s11269-008-9388-8
[4]  ABDUL, R. G., MUHAMMAD, M. A., HASHIM, N. H., et al. De-velopment of geomorphologic instantaneous unit hydrograph for a large watershed. Environmental Monitoring and Assessment, 2012, 184(5): 3153-3163.
http://dx.doi.org/10.1007/s10661-011-2179-3
[5]  徐宗学, 程磊. 分布式水文模型研究与应用进展[J]. 水利学报, 2010, 41(9): 1009-1017. XU Zongxue, CHENG Lei. Progress on studies and applications of the distributed hydrological models. Journal of Hydraulic Engineering, 2010, 41(9):1009-1017. (in Chinese)
[6]  金菊良, 丁晶, 魏一鸣. 瞬时单位线的优化估计[J]. 水力发电学报, 2003(1): 70-75. JIN Juliang, DING Jing and WEI Yiming. Optimal estimation of instantaneous unit hydrograph. Journal of Hydroelectric En-gineering, 2003(1): 70-75. (in Chinese)
[7]  DONG, S. H. Genetic algorithm based parameter estimation of nash model. Water Resources Management, 2008, 22(4): 525- 533.
http://dx.doi.org/10.1007/s11269-007-9208-6
[8]  柏绍光, 黄英, 方绍东, 等. 纵向岭谷区小流域洪水汇流参数外延分析[J]. 水资源研究, 2007, 28(1): 18-20. BAI Shaoguang, HUANG Ying, FANG Shaodong and LI Zishun. Analysis of LRGR small basin flood confluence parameters extension. Journal of Water Resources, 2007, 28(1): 18-20. (in Chinese)
[9]  乐红玲, 张萍霞, 王船海, 等. 平原河网区坡面汇流分布式单位线研究[J]. 水电能源科学, 2015, 33(2): 25-28. LE Hongling, ZHANG Pingxia, WANG Chuanhai, LIU Yuanyuan and WANG Yan. Research of distributed unit hydrograph of overland flow concentration in plain river network region. Water Resources and Power, 2015, 33(2): 25-28. (in Chinese)
[10]  姚蕾, 梁忠民, 王军, 等. Nash汇流模型在无资料地区的应用[J]. 水电能源科学, 2014, 32(2): 23-26. YAO Lei, LIANG Zhongmin, WANG Jun and HU Yiming. Application of nash model in ungauged basin. Water Resources and Power, 2014, 32(2): 23-26. (in Chinese)
[11]  江龙, 黄诗峰, 金菊良, 等. 基于GIS的安徽省淮河流域1978年历史大旱模拟与评估[J]. 水电能源科学, 2014, 32(6): 1-4. JIANG Long, HUANG Shifeng, JIN Juliang, FEI Zhenyu and OUYANG Wei. GIS-based simulation and assessment of histor-ical drought in 1978 of Huaihe River Basin of Anhui Province. Water Resources and Power, 2014, 32(6): 1-4. (in Chinese)
[12]  杨自坤, 孔燕. 新安江三水源模型在横江洪水预报中的应用[J]. 水资源研究, 2010, 31(1): 36-38, 48. YANG Zikun, KONG Yan. Flood forecasting based on three sources Xin’anjiang Model in Heng River. Journal of Water Re-sources, 2010, 31(1): 36-38, 48. (in Chinese)
[13]  金菊良, 杨晓华, 丁晶. 基于实数编码的加速遗传算法[J]. 四川大学学报(工程科学版), 2000, 32(4): 20-24. JIN Juliang, YANG Xiaohua, DING Jing. Real coding based acceleration genetic algorithm. Journal of Sichuan University (Engineering Science Edition), 2000, 32(4): 20-24. (in Chinese)
[14]  徐磊磊, 刘敬林, 金昌杰, 王安志, 关德新, 吴家兵, 袁凤辉. 水文过程的基流分割方法研究进展[J]. 应用生态学报, 2011, 22(11): 3073-3080. XU Leilei, LIU Jinglin, JIN Changjie, WANG Anzhi, GUAN Dexin, WU Jiabing and YUAN Fenghui. Baseflow separation methods in hydrological process research: A review. Chinese Journal of Applied Ecology, 2011, 22(11): 3073-3080. (in Chi-nese)
[15]  詹道江. 工程水文学[M]. 北京: 中国水利水电出版社, 2010: 87-96. ZHAN Daojiang. Engineering hydrology. Beijing: China Water & Power Press, 2010: 87-96. (in Chinese)
[16]  翟丽妮, 梅亚东, 孔凡哲. 单位线方法在沿渡河流域的应用研究[J]. 中国农村水利水电, 2007(9): 16-18, 22. ZHAI Lini, MEI Yadong, KONG Fanzhe. Application of unit hydrograph method in the Yandu River Basin. China Rural Water and Hydropower, 2007(9): 16-18, 22. (in Chinese)

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