基于新安江模型的考虑超渗产流及塘坝调蓄的洪水过程模拟  

Simulation of Flood Process Based Xinanjiang Model in Consideration of Infiltration-Excess Runoff and Storage of Ponds

作　　者：毕婉 王建群[1] 丁建华[1] 

机构地区：[1]河海大学水文水资源学院,江苏南京210098

出　　处：《水电能源科学》2017年第2期75-78,共4页Water Resources and Power

基　　金：国家重点研发计划课题(2016YFC0400909);国家自然科学基金项目(41371047)

摘　　要：针对山丘区众多小型水库、塘坝的兴利库容大小不一致,先蓄满的水库塘坝率先溢流,全部水库塘坝蓄满后全部溢流的现象,提出了一种改进模型,即在新安江模型中嵌入超渗产流和塘坝调蓄模块,建立了同时考虑超渗产流和塘坝调蓄影响的流域水文模型,选用大汶河黄前水库流域大水年份实测水文资料进行率定和验证,并与未考虑超渗产流影响和塘坝调蓄影响的计算结果进行了对比分析。结果表明,当不考虑超渗产流影响时,模拟的洪峰偏低;当不考虑塘坝调蓄影响时,模拟的洪峰偏高、峰现时间提前。可见在新安江模型中同时考虑超渗产流和塘坝调蓄的作用能有效提高半湿润区流域洪水过程模拟的精度。An improved Xinanjiang model was proposed in consideration of the effect of the infiltration-excess runoff and the storage of ponds and small reservoirs simultaneously.In the model,the Xinanjiang model was embedded in the infiltration excess runoff module and the storage module of ponds and small reservoirs in consideration of the catchment area,storage capacity and discharge coefficient of the storage model,for the pond and small reservoir capacity size inconsistent in hilly areas,the first filled pond and small reservoir overflow in advance,full overflow after all pond and small reservoirs filled,and the phenomenon of infiltration-excess runoff.The precipitation and discharge process data in the flood years in the Huangqian Reservoir watershed of the Dawen River Basin were used to calibrate and validate the model.The simulation processes respectively between the improved model and the model of the ignored effect of infiltration-excess runoff and the simulation processes respectively between the improved model and the ignored effect of the storage of pond and small reservoirs were compared and analyzed.The results show that the simulated flood peak is low without considering the effect of the infiltration-excess runoff.The simulated flood peak is high and occurs in advance without considering the effect of the storage of pond and small reservoirs.The improved Xinanjiang model can significantly raise the precision of model in consideration of the effect of the infiltration-excess runoff and the storage of pond and small reservoirs simultaneously.

关 键 词：塘坝调蓄 超渗产流 新安江模型 洪水预报 

分 类 号：TV122[水利工程—水文学及水资源]