摘要
根据曼宁公式计算流量的基本原理和方法,分别从水力半径、糙率、比降、断面面积等角度分析了该方法在应用中存在的系统误差,并用濑溪水文站的实测水位、流量、比降数据进行误差分析比较,指出误差存在的根源及消除或减小的方法,以提高计算精度。
Based on basic principle and method of flow computation by gradient area law ,induced systematic error is analyzed as viewed from hydraulic radius roughness, specific gradient and section area. Results of error analysis are compared with actually measured data in Laixi hydrologic station. The cause of errors and corresponding correction measures are pointed out. As a result,the accuracy of computation can be improved.
出处
《水电能源科学》
2008年第1期93-96,共4页
Water Resources and Power
关键词
曼宁公式
流量计算
误差分析
河段平均
gradient area law
flow computation
error analysis
average section of river
