lisp 河道水面线计算_天然河道水面线计算的几种方法解剖.pdf
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、
HEC-RAS SOBEK 4
軟件及 軟件 種常用的水面線推算方法,并對不
同河道進行了水面線推算,然后對計算結果進行了對比分析。結果表
明:對于坡度較小且沿程順直、斷面規整的河道,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
系統進行水面線推算;對于斷面不規整的緩流河道,水位推算結果大
HEC RAS SOBEK
體呈天然河道水面線系統、 - 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
關鍵詞:明渠恒定均勻流法;天然河道水面線系統; -
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
總結
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