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分析了马斯京根法、瞬时单位线法、水动力学方法(动力波、扩散波和运动波演算模型),并将其应用城市非恒定无压雨水管流流量演算;通过雨水管道室内实验和演算方法对比得出:马斯京根法计算更加简单,可在资料条件不好,精度要求较高时,用于城市雨水管道的流量演算;瞬时单位线法对于城市雨水管道的演算具有不稳定性,在资料条件不好,精度要求一般时,可用于雨水管道的实际流量演;动力波计算精度较高,可适应于各种管道坡度和入流条件.在资料条件好,精度要求高时,可用于城市雨水管道的流量演算;扩散波与运动波计算比动力波简单,在资料条件好,精度要求一般的情况下,可用于城市雨水管道的实际模拟计算.
The Muskingum method, instantaneous unit-line method and hydrodynamic method (dynamic, diffusive and moving wave calculus models) were analyzed and applied to calculate the flow rate of urban unsteady unpressurized water. Through the indoor experiment of rainwater pipeline and Comparisons of calculation methods show that the calculation by Muskingum method is simpler, and can be used for the calculation of the flow of urban stormwater pipes when the data conditions are not good and the precision is high. The transient unit-line method is unstable for the calculation of urban stormwater pipes It can be used for the actual flow rate of rainwater pipeline when the data conditions are not good and the accuracy requirements are normal. The dynamic wave calculation accuracy is high and can be adapted to various pipeline slope and inflow conditions.When the data conditions are good and the precision requirements are high, It can be used to calculate the flow of urban stormwater pipes. The calculation of diffusive wave and moving wave is simpler than that of dynamic wave. It can be used in the actual simulation calculation of urban stormwater pipeline under the conditions of good data and precision.