新旧手册图集推理公式法的应用分析

Application Analysis of the Inference Formula Method of the New and Old Manuals Atlas

推理公式法在设计洪水推求中为较常采用的一种计算方法,研究不同时期图集手册中参数的变化对推理公式法计算成果的影响具有重要意义,为进一步研究近年来洪水变化的影响,以推求霸王河渡槽百年一遇洪水为例,分别采用《陕西省中小流域设计暴雨洪水图集》(1985年)、《宝鸡水文实用手册》(1988年)、和《陕西省水文手册》(2021年)进行推理公式法的洪峰流量计算,并通过对比分析得出新手册推理公式法洪峰计算成果变小的结论及手册其他方法计算设计洪水也变小的猜想。

Inference formula method is a commonly used calculation method in design flood estimation.It is of great significance to study the influence of the changes of parameters in the atlas manuals in different periods on the calculation results of the inference formula method.In order to further study the impact of flood changes in recent years,taking the calculation of the once-in-a-century flood in the Bawang River aqueduct as an example,the Atlas of Heavy Rain and Flood Design in Small and Medium Watersheds in Shaanxi Province(1985)and the Baoji Hydrology Practical Handbook(1988)were used respectively.,and the"Hydrology Handbook of Shaanxi Province"(2021)to carry out the calculation of peak discharge by the inference formula method.And through comparative analysis,it is concluded that the calculation result of the flood peak by the new manual reasoning formula method is smaller,and the conjecture that the calculation design flood by othermethods in the manual is also smaller.