The Study Of Runoff Calculation In Xiaoqing River Basin Of Jinan City

Basin runoff is an important basis calculated for flood forecasting and hydrology scheduling. As natural runoff mechanism itself is very complicated, the impact of human activities has also increased the complexity. Therefore, the calculation of runoff depends on the pros and cons of calculating the degree of difficulty and the accuracy of the calculated results.The Xiaoqing River Basin of Jinan City as an example of the rainfall-runoff-related laws and improved SCS-runoff model in the application of computing. In the SCS model on the basis of their re-rate parameters. Runoff: Application SCS runoff model structure, the Jinan City through the Xiaoqing River basin from 1997 to 2004 rainwater data analysis, and the early loss before the rain may be stranded in the valley of the relationship between the automatic optimization; rate Empirical formula for the calculation of parameters. Convergence: the SCS on the basis of the structure model convergence with the Xiaoqing River Basin rainwater Jinan information centre has been selected rainstorm different locations in a typical watershed rainwater process, Integrated convergence model parameters and SCS convergence dimensionless unit, Convergence calculation. SCS to explore improved model in Jinan City in the Xiaoqing River Basin applications.According to the SCS-runoff model parameters of the rate of re-thinking to Visual Basic programming language and development tools for the Data Access Platform, combined with Jinan City Xiaoqing River Basin runoff calculation of the actual situation in the preparation of the Jinan City Xiaoqing River Basin runoff forecasting system to improve the accuracy and efficiency calculation.Calculated by the runoff results, will improve the model used in Jinan City SCS Xiaoqing River basin runoff calculation, the result is better, we can Jinan City Xiaoqing River Basin flood control and use of water resources provided. In addition it should be noted that SCS runoff model of the structure did not consider the impact of rainfall intensity, the convergence model unit is actually a triangle unit peak after only one slope, runoff did not take into account different composition convergence speed the pace of future In this regard should do some research to perfect its runoff structure.