广东省改进综合单位线法洪峰流量计算方法研究  

Research on flow calculation method of improved synthetic unit hydrograph of Guangdong

作　　者：李整[1] 陈代海[1] 刘琼[1] 

机构地区：[1]郑州大学土木工程学院,河南郑州450001

出　　处：《铁道科学与工程学报》2017年第11期2377-2383,共7页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(51408557);河南省高等学校重点科研资助项目(15A560011)

摘　　要：以广东省中小流域设计洪峰流量计算为研究对象,提出一种基于广东省综合单位线的改进的综合单位线法:结合现行三角形单位线模型特点和广东省综合单位线差值平方和最小简化分析结果,建立改进的综合单位线;确定上涨历时、基期和峰值计算公式;借鉴影响线加载原理,将净雨系列在改进的综合单位线上加载推求设计流量。研究结果表明:改进的综合单位线法理论依据充分,计算过程易于掌握,实例分析结果与广东省综合单位线法和推理公式法计算结果吻合,进一步验证后可在全省推广应用。In order to study the design peak flow calculation method of medium and small basins in Guangdong,improved synthetic unit hydrograph based on Guangdong synthetic unit hydrograph improvement was putforward. It was combined with characteristics of the present triangular unit hydrograph models and simplifiedanalysis results of Guangdong synthetic unit hydrograph by considering the minimum sum-of-squared differences.The improved synthetic unit hydrograph was set up to establish formulas of the rising duration, base period andpeak value. The design peak flow was calculated by loading improved synthetic unit hydrograph with the netrainfall list and taking influence line loading principle as lessons. Results show that the improved synthetic unithydrograph has enough theoretic bases, and its calculation process is easy to master. Cases analysis results provethat, improved synthetic unit hydrograph method is reliable compared with comprehensive unit hydrographmethod and rational formula method of Guangdong. It can be applied in the whole province after furtherverification.

关 键 词：洪峰流量 三角形单位线 综合单位线 中小流域 广东省 

分 类 号：U442.3[建筑科学—桥梁与隧道工程]