本文選題：數(shù)字高程模型 + 水沙特性　； 參考：《合肥工業(yè)大學(xué)》2014年碩士論文

【摘要】：浮山至老子山河段是淮河干流入洪澤湖河段，受淮河干流和洪澤湖雙重影響，演變規(guī)律復(fù)雜。該段河道呈倒坡降，阻水嚴(yán)重。研究該段河道演變特性，對于選擇該段河道的整治方案、改善入湖河段過流條件，具有重要參考意義。為了理清該段河道的演變特點，本文利用1992年、2001年及2010年實測河道斷面資料，建立了該段河道數(shù)字高程模型。并利用模型計算河道沿程沖淤量，分析了沖淤區(qū)域分布、沖淤方式，以及縱向、橫向演變特點。結(jié)果表明：(1)浮山至洪山頭河段主槽沖刷明顯，灘地較穩(wěn)定；(2)洪山頭以下沖淤速度緩慢，洪山頭至盱眙段1992至2001年為微淤，，2001至2010年轉(zhuǎn)變?yōu)槲_；（3）河道沒有出現(xiàn)明顯的支汊淤積現(xiàn)象。 河道沖淤變化，歸根結(jié)底是由于水流含沙量與挾沙能力不相適應(yīng)。研究河道的水沙特性，對于理解河道的沖淤現(xiàn)象、把握河道沖淤特性，都是非常重要的。魯臺子水文站是淮河中游重要水文站。本文以魯臺子水沙資料為基礎(chǔ)，研究了淮河中游水沙特性，建立了水沙關(guān)系式。 泥沙數(shù)學(xué)模型是河床演變研究的重要手段。本文在實際沖淤特性分析和水沙特性分析的基礎(chǔ)上，建立了入湖河段一維泥沙數(shù)學(xué)模型。
[Abstract]:The section from Fushan to Laozi Mountain is a section of Huaihe River flowing into Hongze Lake, which is influenced by both the main stream of Huaihe River and Hongze Lake, and the evolution law is complicated. This section of the river is downhill, blocking the water seriously. The study of the evolution characteristics of this section of the river channel is of great significance for selecting the regulation scheme of this section of the river channel and improving the flow conditions of the river reach into the lake. In order to clarify the evolution characteristics of this section of the river, the digital elevation model of this section is established by using the measured data of river sections in 1992, 2001 and 2010. The model is used to calculate the amount of scour and deposition along the course, and the regional distribution of scouring and silting, the mode of scouring and silting, and the characteristics of longitudinal and lateral evolution are analyzed. The results show that the main channel between Fushan and Hongshantou reaches is obviously washed away, and the beach is more stable than that under Hongshan, and the velocity of scouring and silting is slow. From 1992 to 2001, from Hongshantou to Xuyi, it changed into micro-scour from 2001 to 2010) there is no obvious branch sedimentation in the channel. The change of scour and siltation of river is, in the final analysis, because the sediment content of flow is not suitable for sediment carrying capacity. It is very important to study the characteristics of water and sediment in river course to understand the phenomenon of erosion and siltation and to grasp the characteristics of erosion and siltation. The Lutaizi Hydrologic Station is an important hydrological station in the middle reaches of the Huaihe River. Based on the data of water and sediment in Lutaizi, the characteristics of water and sediment in Huaihe River are studied, and the relationship between water and sediment is established. Sediment mathematical model is an important means to study river bed evolution. Based on the analysis of actual scouring and silting characteristics and the analysis of water and sediment characteristics, a one-dimensional sediment mathematical model for the reach of the lake is established in this paper.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV147

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