堤防新型防浪预制块护坡设计及其消浪效果模型试验研究
发布时间：2019-04-28 08:10
【摘要】：堤防工程是我国湖区主要的防洪工程措施,堤防工程的安全问题直接关系到防洪工程的成败以及湖区居民的生命财产安全,而堤防防护是保障堤防工程安全的重要措施,其中堤防护坡便是堤防防护中不可或缺的重要一环。本课题来源于江西省水利厅科技项目《鄱阳湖区堤防防浪预制块护坡及其消浪效果研究》。由于长期受到长江流域洪水的影响,洪涝灾害的频发已经严重威胁到鄱阳湖区以及周边地区的居民生活和经济建设。由于修缮时间较早,相关防洪标准低,以及施工技术的限制,堤防工程日益老旧,发生事故的概率也在逐年增加。鄱阳湖区重点堤防工程重新加固建设刻不容缓。为解决目前湖区堤防工程存在的问题,本文从湖区堤防预制块护坡方面入手,主要研究内容及结论如下:(1)本文首先从风浪形成机理与要素出发,通过阅读相关文献资料,系统的了解了风浪形成的影响因素,分析了波浪与堤坡作用的机理。(2)通过对波浪爬高影响因素的分析,以及对现有防浪护坡体型及消浪效果调研,并结合湖区堤防的实际情况,有针对性的设计出了三种新型防浪消能混凝土预制块护坡体型。(3)基于重力相似准则设计并进行了防浪消能预制块护坡波浪爬高对比模型试验,并对实验数据进行了系统的分析和总结。通过与传统光面预制块护坡的波浪爬高试验对比得出,此三种新型堤防混凝土预制块护坡体型的消浪效果均明显优于传统光面预制块护坡。这三种新型预制块护坡体型的设计对湖区堤防除险加固工程具有一定的科研参考价值及工程实践意义。
[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.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TV871;TV139.2
本文编号：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.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TV871;TV139.2
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