选取三种经典的稳定河道计算方法: Yalin 和da Silv a 方法、Chang 方法、H uang 和Nanso n 方法, 运用323 组 原型观测和水槽试验资料对不同方法进行了验证, 并对其计算误差进行了定量分析比较。结果表明: 对于稳定河宽 和稳定水深的计算, 精度最高的是Yalin 和da Silva 方法, 最低的是Chang 方法; 对于稳定比降的计算, 精度最高的 是Huang 和Nanson 方法, Yalin 和da Silv a 方法稍显逊色。综合而言, Yalin 和da Silv a 方法精度较高。

Three typical determination methods o f stable channel, including Yalin and da Silva met ho d, Chang method, and H uang and Nanson method, w ere selected and verified using 323 dat a sets fr om prot oty pe measurement s and flume tests. T he calcula2 tion err or s o f these methods w ere analyzed and compared quantitativ ely. The results show ed that Yalin and da Silv a met ho d has the hig hest pr ecision w hereas Chang metho d has the lowest in the calculatio n of channel w ith stable w idth and depth, and H uang and Nanson method has the highest pr ecision whereas Yalin and da Silva method has lower pr ecision in t he calculation o f chan2 nel w ith stable slo pe. In general, Yalin and da Silva metho d shows a better precisio n and can be recommended for use in t his study.

国家自然科学基金资助项目( 51239003; 51479071) ; 江苏省自然科学基金面上项目/ 变化环境条件下河弯特性及河流演变的响 应机理0 ( BK2012808) ; 江苏高校优势学科建设工程资助项目( YS11001) ; 高等学校学科创新引智计划资助( B12032) ; 河海大学 大学生创新训练计划项目( 2013102941094)