天然河道水面线计算的几种方法探讨

赵文丽

710003

710003

陕西天元水利电力勘察设计有限公司 陕西 西安 771100000033

摘要：介绍了明渠恒定均匀流法、天然河道水面线系统、

HEC-RAS SOBEK 4

软件及 软件 种常用的水面线推算方法，并对不

同河道进行了水面线推算，然后对计算结果进行了对比分析。结果表

明：对于坡度较小且沿程顺直、断面规整的河道，若下游起始水位对

上游河道水位影响较小，则可用明渠恒定均匀流法进行水面线推算；

若下游起始水位对上游河道水位影响较大，则可采用天然河道水面线

系统进行水面线推算；对于断面不规整的缓流河道，水位推算结果大

HEC RAS SOBEK

体呈天然河道水面线系统、 - 软件、 软件的趋势；

HEC RAS SOBEK

对于急流河道， - 软件推算的水位比 软件推算的水

位偏高。

HEC RAS

关键词：明渠恒定均匀流法；天然河道水面线系统； -

软件；SOBEK软件；水面线推算

Abstract

Abstract

AAbbssttrraacctt: nullah constant uniform flow method, four kinds of water lines in the natural

channel surface line system, HEC-RAS software and SOBEK software projection

methods, and different river water surface line projections, then the calculation results of

the comparative analysis. The results show that: if the downstream starting water level on

the upstream river water level downstream starting water level For a slope smaller and

straight along regular cross-section of the river, upstream water level of rivers, the

available the nullah constant uniform flow method, the water line projections; greater

impact, you can use the natural channel surface line system for the water line projections;

sectional irregular slow flow of the river, the water level projection results in a substantially

natural channel surface line> HEC-RAS software> SOBEK software trend; rapids river

HEC-RAS software projected water level than SOBEK software projected high water level.

Keywords

Keywords

KKeeyywwoorrddss: nullah constant uniform