堤防新型防浪預制塊護坡設計及其消浪效果模型試驗研究
發(fā)布時間:2019-04-28 08:10
【摘要】:堤防工程是我國湖區(qū)主要的防洪工程措施,堤防工程的安全問題直接關系到防洪工程的成敗以及湖區(qū)居民的生命財產安全,而堤防防護是保障堤防工程安全的重要措施,其中堤防護坡便是堤防防護中不可或缺的重要一環(huán)。本課題來源于江西省水利廳科技項目《鄱陽湖區(qū)堤防防浪預制塊護坡及其消浪效果研究》。由于長期受到長江流域洪水的影響,洪澇災害的頻發(fā)已經嚴重威脅到鄱陽湖區(qū)以及周邊地區(qū)的居民生活和經濟建設。由于修繕時間較早,相關防洪標準低,以及施工技術的限制,堤防工程日益老舊,發(fā)生事故的概率也在逐年增加。鄱陽湖區(qū)重點堤防工程重新加固建設刻不容緩。為解決目前湖區(qū)堤防工程存在的問題,本文從湖區(qū)堤防預制塊護坡方面入手,主要研究內容及結論如下:(1)本文首先從風浪形成機理與要素出發(fā),通過閱讀相關文獻資料,系統(tǒng)的了解了風浪形成的影響因素,分析了波浪與堤坡作用的機理。(2)通過對波浪爬高影響因素的分析,以及對現有防浪護坡體型及消浪效果調研,并結合湖區(qū)堤防的實際情況,有針對性的設計出了三種新型防浪消能混凝土預制塊護坡體型。(3)基于重力相似準則設計并進行了防浪消能預制塊護坡波浪爬高對比模型試驗,并對實驗數據進行了系統(tǒng)的分析和總結。通過與傳統(tǒng)光面預制塊護坡的波浪爬高試驗對比得出,此三種新型堤防混凝土預制塊護坡體型的消浪效果均明顯優(yōu)于傳統(tǒng)光面預制塊護坡。這三種新型預制塊護坡體型的設計對湖區(qū)堤防除險加固工程具有一定的科研參考價值及工程實踐意義。
[Abstract]:The levee project is the main flood control project measure in the lake area of our country, the safety problem of the dike project is directly related to the success or failure of the flood control project and the life and property safety of the residents in the lake area, and the dike protection is an important measure to guarantee the safety of the levee project. Among them, dike slope protection is an indispensable part of dike protection. This project comes from the science and technology project of Jiangxi Water Conservancy Department, the study on slope protection and wave elimination effect of prefabricated block of levee protection in Poyang Lake area. As a result of the long-term impact of flood in the Yangtze River Basin, the frequent occurrence of flood disasters has seriously threatened the lives and economic construction of the people in Poyang Lake region and its surrounding areas. Due to the early repair time, low flood control standards and the limitation of construction technology, the dyke works are getting older and older, and the probability of accidents is increasing year by year. Poyang Lake area key dike project reinforcement construction is urgent. In order to solve the problems existing in the levee engineering at present, the main research contents and conclusions are as follows: (1) based on the formation mechanism and elements of wind waves, this paper starts from the aspects of slope protection with precast blocks of levees in the lake area, and through reading the relevant literature materials, The influence factors of wind wave formation are systematically understood, and the mechanism of wave and dike slope action is analyzed. (2) through the analysis of the influencing factors of wave climbing, and the investigation of the existing wave protection slope shape and wave elimination effect, And combined with the actual situation of the levees in the lake area, Three new types of wave energy dissipation concrete prefabricated blocks are designed for slope protection. (3) based on the gravity similarity criterion, a comparative model test of wave climbing for wave energy dissipation prefabricated concrete slope protection is designed and carried out. The experimental data are analyzed and summarized systematically. Through the comparison with the wave climbing test of the traditional smooth prefabricated block, it is found that the wave elimination effect of the three new types of embankment concrete precast block is obviously better than that of the traditional smooth prefabricated block. The design of the three new types of prefabricated blocks for slope protection has certain scientific reference value and practical significance for the reinforcement of levees in the lake area.
【學位授予單位】:南昌大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:TV871;TV139.2
本文編號:2467471
[Abstract]:The levee project is the main flood control project measure in the lake area of our country, the safety problem of the dike project is directly related to the success or failure of the flood control project and the life and property safety of the residents in the lake area, and the dike protection is an important measure to guarantee the safety of the levee project. Among them, dike slope protection is an indispensable part of dike protection. This project comes from the science and technology project of Jiangxi Water Conservancy Department, the study on slope protection and wave elimination effect of prefabricated block of levee protection in Poyang Lake area. As a result of the long-term impact of flood in the Yangtze River Basin, the frequent occurrence of flood disasters has seriously threatened the lives and economic construction of the people in Poyang Lake region and its surrounding areas. Due to the early repair time, low flood control standards and the limitation of construction technology, the dyke works are getting older and older, and the probability of accidents is increasing year by year. Poyang Lake area key dike project reinforcement construction is urgent. In order to solve the problems existing in the levee engineering at present, the main research contents and conclusions are as follows: (1) based on the formation mechanism and elements of wind waves, this paper starts from the aspects of slope protection with precast blocks of levees in the lake area, and through reading the relevant literature materials, The influence factors of wind wave formation are systematically understood, and the mechanism of wave and dike slope action is analyzed. (2) through the analysis of the influencing factors of wave climbing, and the investigation of the existing wave protection slope shape and wave elimination effect, And combined with the actual situation of the levees in the lake area, Three new types of wave energy dissipation concrete prefabricated blocks are designed for slope protection. (3) based on the gravity similarity criterion, a comparative model test of wave climbing for wave energy dissipation prefabricated concrete slope protection is designed and carried out. The experimental data are analyzed and summarized systematically. Through the comparison with the wave climbing test of the traditional smooth prefabricated block, it is found that the wave elimination effect of the three new types of embankment concrete precast block is obviously better than that of the traditional smooth prefabricated block. The design of the three new types of prefabricated blocks for slope protection has certain scientific reference value and practical significance for the reinforcement of levees in the lake area.
【學位授予單位】:南昌大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:TV871;TV139.2
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