稳定河道计算方法分析与比选  

Analysis and comparison of determination methods for stable channel

作　　者：戴文鸿[1,2,3] 闫志方[2] 陈奕[2] 张松 沈余龙 

机构地区：[1]水文水资源与水利工程科学国家重点实验室,南京210098 [2]河海大学水利水电学院,南京210098 [3]河海大学水资源高效利用与工程安全国家工程研究中心,南京210098 [4]扬州市勘测设计研究院有限公司,江苏扬州225007 [5]江苏泰州市姜堰区住建局,江苏泰州225500

出　　处：《南水北调与水利科技》2015年第4期686-690,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：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"(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)

摘　　要：选取三种经典的稳定河道计算方法:Yalin和da Silva方法、Chang方法、Huang和Nanson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 Silva方法稍显逊色。综合而言,Yalin和da Silva方法精度较高。Three typical determination methods of stable channel, including Yalin and da Silva met hod, Chang method, and H uang and Nanson method, w ere selected and verified using 323 dat a sets from prot otype measurement s and flume tests. T he calcula-tion errors of these methods w ere analyzed and compared quantitatively. The results show ed that Yalin and da Silva met hod has the highest precision w hereas Chang method has the lowest in the calculation of channel w ith stable w idth and depth, and H uang and Nanson method has the highest precision whereas Yalin and da Silva method has lower precision in t he calculation of chan-nel w ith stable slope. In general, Yalin and da Silva method shows a better precision and can be recommended for use in t his study.

关 键 词：稳定河道 形态预测 计算方法验证 误差分析 比选 

分 类 号：TV147[水利工程—水力学及河流动力学]