本文關(guān)鍵詞： 彎曲分汊河道 沖淤特性 通航狀況 演變趨勢　出處：《水電能源科學》2017年04期 　論文類型：期刊論文

【摘要】：皇華城河道為三峽常年庫區(qū)典型的彎曲分汊河道,在三峽成庫后"蓄清排渾"模式影響下,該河道淤積強度大、迅速,且已造成航槽易位和擺動,航道條件極其不穩(wěn)。依據(jù)皇華城河道實測地形、來水來沙資料,分析了河段泥沙沖淤特性、典型斷面淤積變化、深泓線變化和通航影響,初步預(yù)測了該河道的通航狀況和演變趨勢。結(jié)果表明,皇華城河道存在細沙累積性淤積,淤積速度、厚度、范圍均較大的特點,且主要淤積部位較為固定,淤積范圍有上延趨勢;河道左汊深泓年際間發(fā)生淤積變化,導致深泓線逐漸從左汊擺動至右汊。
[Abstract]:The Huanghuacheng River is a typical curved braided channel in the three Gorges reservoir area. Under the influence of the model of "storing, clearing and removing muddy" after the formation of the three Gorges reservoir, the channel silting is strong, rapid, and has caused the transposition and swinging of the channel. The channel condition is extremely unstable. Based on the measured topography and the data of incoming water and sediment, the characteristics of sediment scouring and silting, the siltation change of typical section, the variation of deep channel and the influence of navigation are analyzed. The navigable condition and evolution trend of the channel are preliminarily predicted. The results show that the river channel of Huanghua City has the characteristics of accumulation of fine sand, velocity, thickness and range of fine sand, and the main silting sites are relatively fixed. There is an upward trend in the range of deposition, and there is an interannual siltation change in the deep stream of the left branch of the river, which leads to the gradual swing of the deep line from the left branch to the right branch.
【作者單位】： 重慶交通大學河海學院;國家內(nèi)河航道整治工程技術(shù)研究中心;
【基金】：重慶市基礎(chǔ)與前沿研究計劃項目(cstc2015jcyja90013) 重慶市社會民生科技創(chuàng)新專項項目(cstc2015shmszx30024)
【分類號】：TV147
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本文編號：1550604