瞬时单位线计算地面径流峰值的探讨
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摘要
工程设计中常采用固定时段计算设计洪水,洪峰从有限的计算时段上统计,存在一定误差.为控制成果精度,可按瞬时单位线上涨历时调整计算时段,计算的原固定时段点的地面径流调整前后不变.还提出了计算任意时刻地面径流的公式,可直接试算地面径流峰值,也可计算出非等距的地面径流过程.
In engineering design,the design flood is usually calculated in a fixed period of time. In order to control the accuracy of the results,the calculation period can be adjusted according to the rising time of the instantaneous unit line. A formula for calculating ground runoff at any time is presented,which can be used to calculate the peak value of ground runoff directly or to calculate the non-equidistant ground runoff process.
In engineering design,the design flood is usually calculated in a fixed period of time. In order to control the accuracy of the results,the calculation period can be adjusted according to the rising time of the instantaneous unit line. A formula for calculating ground runoff at any time is presented,which can be used to calculate the peak value of ground runoff directly or to calculate the non-equidistant ground runoff process.
引文
[1]叶守泽,许静仪,王祥三,等.水文水利计算[M].北京:中国水利水电出版社,1992年.
[2]沈跃明,陈天良,肖公健,等.四川省中小流域暴雨洪水计算手册[M].成都:四川省水利厅,1984年.
[3]江西省暴雨洪水查算手册[M].南昌:江西省水文局,2010年.
[4]周斌,赵正鹏.广西暴雨洪水计算的局部优化探讨[J].人民珠江,2015(5):55~57.
[5]耿鸿江,齐松茹.瞬时单位线的Excel快速算法[J].人民长江,2003(2):6~7.
[2]沈跃明,陈天良,肖公健,等.四川省中小流域暴雨洪水计算手册[M].成都:四川省水利厅,1984年.
[3]江西省暴雨洪水查算手册[M].南昌:江西省水文局,2010年.
[4]周斌,赵正鹏.广西暴雨洪水计算的局部优化探讨[J].人民珠江,2015(5):55~57.
[5]耿鸿江,齐松茹.瞬时单位线的Excel快速算法[J].人民长江,2003(2):6~7.