人民长江
人民長江
인민장강
YANGTZE RIVER
2014年
7期
77-80
,共4页
响应函数%汇流模型%正交多项式%洪水预报
響應函數%彙流模型%正交多項式%洪水預報
향응함수%회류모형%정교다항식%홍수예보
response function%confluence model%orthogonal polynomial%flood forecasting
将伽马非正交函数族和勒让德正交函数族作为系统响应函数,以此建立地面径流汇流预报模型,同时,为进一步比较模型计算结果的优劣,还选用了纳西瞬时单位线汇流模型与之进行对比分析,并对王英水库2005年的4次洪水过程进行了预报试验。结果表明,选择的3种汇流模型中,纳西瞬时单位线汇流模型的试验效果最好,其次是伽马函数族汇流模型,最后是勒让德函数族汇流模型,其平均确定性系数分别为85.54%,83.86%,80.97%。
將伽馬非正交函數族和勒讓德正交函數族作為繫統響應函數,以此建立地麵徑流彙流預報模型,同時,為進一步比較模型計算結果的優劣,還選用瞭納西瞬時單位線彙流模型與之進行對比分析,併對王英水庫2005年的4次洪水過程進行瞭預報試驗。結果錶明,選擇的3種彙流模型中,納西瞬時單位線彙流模型的試驗效果最好,其次是伽馬函數族彙流模型,最後是勒讓德函數族彙流模型,其平均確定性繫數分彆為85.54%,83.86%,80.97%。
장가마비정교함수족화륵양덕정교함수족작위계통향응함수,이차건입지면경류회류예보모형,동시,위진일보비교모형계산결과적우렬,환선용료납서순시단위선회류모형여지진행대비분석,병대왕영수고2005년적4차홍수과정진행료예보시험。결과표명,선택적3충회류모형중,납서순시단위선회류모형적시험효과최호,기차시가마함수족회류모형,최후시륵양덕함수족회류모형,기평균학정성계수분별위85.54%,83.86%,80.97%。
The surface runoff confluence model is established taking the Gama nonorthogonal function family and Legendre or-thogonal function family as the systematic response functions. Meanwhile, the Nash IUH ( Instantaneous Unit Hydrograph) rou-ting model is chosen to compare the calculation result. Four flood process of Wangying Reservoir in 2005 are chosen as forecas-ting test. The test results show that the IUH routing model has the best calculation result, the second is Gama nonorthogonal func-tion family model and the last is Legendre orthogonal function family model, and the average certainty factors are 85. 54%, 83. 86%, 80. 97% respectively.
