对特定堰型的淹没出流，因流量系数、侧收缩系数及淹没系数的不确定性，难以利用经验系数推算溢流堰的过流量。该文提出一种特定堰型下淹没出流流量推演的精确方法：基于物理模型试验数据，对堰上水头与堰下游相对水位进行相关分析，得到特定流量下其相关关系式；后以此关系式中的参数与流量进行二次相关分析，最终得到流量-堰上水头-堰下游相对水位的关系式。经试验验证表明，所得关系式精度较高，其分析方法可应用于类似的多因次相关分析中。%Aiming at submerged flow of specific type of weir , because of its uncertainty of flow coefficient , side contraction coeffi-cient and submerged coefficient , it is difficult to use empirical coefficient to infer and calculate flow of overflow weir .The article puts forward accurate method of deduction and calculation of submerged flow in specific type of weir : based on physical model ex-periment data , relative level of weir upstream and downstream has been correlatively analyzed , correlative equation has been gotten;and then secondary analysis on parameters and flow in the equation , finally the equation of flow -weir head-weir downstream has been calculated .By experimental verification , the equation of deduction from the method is highly precise .The method can be ap-plied to similar multifactorial correlation analysis .
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