一种平原区径流计算的方法研究  

Research on a Method of Runoff Coefficient Calculation in the Plain Area

作　　者：孙明[1] 

机构地区：[1]山西省水文水资源勘测局太谷均衡实验站,山西太谷030800

出　　处：《地下水》2007年第2期5-9,共5页Ground water

摘　　要：平原区的水文计算在当前生态重建环境中具有重要意义。利用仿雨试验,研究地面坡度小于3‰的平原区降雨产流的特征,稳定降雨条件下径流系数的变化规律,提出了“最大径流系数法”对平原降雨产流的计算原理,对非稳定及天然条件下的暴雨过程进行了径流计算。结果表明:(1)对仿雨实验变雨强径流计算,计算值与实测值比较相对误差平均为6.43%;(2)对天然降雨过程的径流计算,计算实例结果误差为5.9%和10.9%。The hydrologic calculation in the plain area is of great significance under the present condition of the ecological environment reconstruction. By the test of the imitated rain, the article researches some rainfall runoff features of the plain area which the slope is less than 3%0, the changing regulation of runoff coefficient under the steady rainfall condition, puts forward the calculation principle of the rainfall runoff this area by using the maximum runoff coefficient method and makes a calculation of the runoff for the process of rainstorm under the unsteady or natural condition. The result shows that： （1） Calculating the runoff process that changed the rain strength through the imitates rain test and comparing the calculated number to the fact number, the average value of the relative errors is 6. 43%. （2）Calculating the runoff process of natural rainfall,the error from the examples are 5.9% and 10. 9%.

关 键 词：最大径流系数 时段径流系数 平原区 径流计算 

分 类 号：X825[环境科学与工程—环境工程]