灌溉水库径流调节的改进计算方法

现行《水利工程水利计算规范》（SL 104-95）中缺少灌溉水库径流调节的具体方法，水库工程设计中通常使用的调节计算办法存在一些不合理性。针对这一问题，通过修正常规计算方法中不合理的计算条件，简化计算过程，选择对常规的长系列时历法（列表法）的计算方法和程序进行了改进，采用长系列连续调节计算，可以适用于多种调节性能的灌溉水库。改进后的方法经过多项工程使用检验，计算过程合理，调节结果准确，水库灌溉供水量和灌溉保证率比常规方法有所增加。 Regulation for Water Conservancy Computation of Water Projects SL 104-95 lacks the specific methods on runoff regulation of irrigation reservoir, and the calculation method commonly used in reservoir engineering design is not reasonable to some extent. In this paper, an improved calculation method was proposed. The improved method modified the calculation method of long time series in the conventional method and applied the long series continuous calculation. It can correct the unreasonable calculation conditions in the conventional method and simplify the calculation process, and it can be applied for the irrigation reservoir with a variety of regulation performances. The improved method was verified by multiple engineering projects, and the results indicated the calculation process is reasonable and regulation results are accurate. Moreover, irrigation water and irrigation assurance increased using the improved method compare with those obtained from the conventional method,.