天然河道水面線計算的幾種方法探討

趙文麗

710003

710003

陜西天元水利電力勘察設(shè)計有限公司 陜西 西安 771100000033

摘要：介紹了明渠恒定均勻流法、天然河道水面線系統(tǒng)、

HEC-RAS SOBEK 4

軟件及 軟件 種常用的水面線推算方法，并對不

同河道進(jìn)行了水面線推算，然后對計算結(jié)果進(jìn)行了對比分析。結(jié)果表

明：對于坡度較小且沿程順直、斷面規(guī)整的河道，若下游起始水位對

上游河道水位影響較小，則可用明渠恒定均勻流法進(jìn)行水面線推算；

若下游起始水位對上游河道水位影響較大，則可采用天然河道水面線

系統(tǒng)進(jìn)行水面線推算；對于斷面不規(guī)整的緩流河道，水位推算結(jié)果大

HEC RAS SOBEK

體呈天然河道水面線系統(tǒng)、 - 軟件、 軟件的趨勢；

HEC RAS SOBEK

對于急流河道， - 軟件推算的水位比 軟件推算的水

位偏高。

HEC RAS

關(guān)鍵詞：明渠恒定均勻流法；天然河道水面線系統(tǒng)； -

軟件；SOBEK軟件；水面線推算

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

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