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介绍SIMHYD降水径流模型的结构及计算原理,利用该模型模拟了丹江口以上汉江上游流域的月流量过程,并采用区间分析方法分析SIMHYD模型参数的敏感性。结果表明:SIMHYD模型可以较好地模拟该流域的月流量过程;根据参数敏感性大小可将SIMHYD模型参数归为3类:第1类为敏感参数,如SMSC和SUB;第2类为较敏感参数,如CRAK和K;第3类为非敏感参数,如INSC,COEFF和SQ。
The structure and calculation principle of SIMHYD precipitation runoff model are introduced. The model is used to simulate the monthly flow of the upper Hanjiang River upstream of Danjiangkou. The sensitivity of SIMHYD model parameters is analyzed by interval analysis method. The results show that the SIMHYD model can simulate the monthly flow of the watershed well. According to the sensitivity of the parameters, the SIMHYD model parameters can be classified into three categories: the first is the sensitive parameters such as SMSC and SUB; the second is more sensitive Parameters such as CRAK and K; and category 3 non-sensitive parameters such as INSC, COEFF and SQ.