城市小流域山区截洪沟水力计算方法探讨  

Discussion on Hydraulic Calculation Method of Flood Interception Ditch in Mountain Area of Urban Small Watershed

作　　者：战军 ZHAN Jun

机构地区：[1]青岛时代建筑设计有限公司,山东青岛266555

出　　处：《城市道桥与防洪》2024年第11期183-186,M0018,共5页Urban Roads Bridges & Flood Control

摘　　要：我国流域众多,由于缺乏暴雨观测资料或短期资料难以延展等原因,经常采用推理公式进行洪水计算。但由于被应用的流域自然条件各异,有关参数的确定也存在一定的任意性,因此有必要对常用的经验公式进行合理性和可靠性分析比较。以青岛市某一山区道路截洪沟为例,分别采用地区经验公式、公路科学研究所经验公式以及地区小型水库洪水核算办法这3种最常用的典型推理公式(或方法)进行雨水水力计算,并根据计算结果提出了公式选取的建议条件,分析了设计参数对水力计算结果的影响,以及其他防护和治理措施。There are many river basins in China.Because of the lack of rainstorm observation data or the difficulty of short-term data extension and other reasons,the flood calculation is often carried out by the inference formula.However,due to the different natural conditions of the river basins adopted,the determination of the relevant parameters is also arbitrary.Therefore,it is necessary to analyze and compare the rationality and reliability of the common empirical formulas.Taking a flood interception ditch of road in a mountainous area of Qingdao City as an example,three commonest typical inference formulas(or methods)are used for the hydraulic calculation of rainwater,including regional empirical formula,empirical formulas from the Institute of Highway Science,and flood accounting methods for small reservoirs in the region.Based on the calculation results,the suggestions for formula selection are proposed.The influence of design parameters on the hydraulic calculation results is analyzed,as well as other improvement protection and control measures.

关 键 词：小流域山区 截洪沟 暴雨公式 防洪标准 安全超高 综合径流系数 

分 类 号：TU992.22[建筑科学—市政工程]