厚软基圩堤水下抛填施工技术研究

发布时间：2018-05-21 02:19

本文选题：堤防 + 深厚软基　；参考：《南昌大学》2017年硕士论文

【摘要】：堤防是指沿河、渠、湖、海岸或行洪区、分洪区、围垦区的边缘修筑的挡水建筑物。堤防是世界上最早广为采用的一种重要防洪工程。筑堤是防御洪水泛滥、保护居民和工农业生产的主要措施。河堤约束洪水后,将洪水限制在行洪道内,使等流量的水深增加,行洪流速增大,有利于泄洪排沙。堤防还可以抵挡风浪及抗御海潮。本文以九江县赤湖中堤综合整治工程建设为工程背景,研究了堤防的设计、施工等方面的内容。主要做了以下工作:(1)水文、地勘分析工程布置及主要建筑物设计。首先研究了堤线的布置,在分析了水文和工程地质相关资料的基础上,综合考虑堤线走向、保护区域的范围以及工程投资效益等因素的影响,选定堤线的布置。然后通过方案的对比确定了堤防断面的拟定,确定了堤防断面的主要技术参数。(2)挤淤分析。赤湖中堤建设的主要难点和工程关键是穿过湖底有深厚淤泥层的湖面,因此综合工程的安全和施工方案考虑,为获得稳定的堤基和准确的工程量、节省工程投资,必须对挤淤的过程开展深入的分析。(3)施工技术方案研究。由于淤泥等软弱土地基具有高的触变性和流变性,如何在淤泥上施工一直是水利工程建设的难点。本文利用挤淤分析计算的结果用于指导施工,通过实地方案比较实验,选择最适合本工程建设的施工方案。结果表明:挤淤分析计算的结果可靠,可以用于指导施工。正确的选择施工方案对工程建设的安全和质量的保证及节约投资有重要意义。
[Abstract]:A levee is a water retaining structure built along a river, canal, lake, coast, or flood area, flood diversion area, and the edge of a reclamation area. Levee is one of the earliest flood control projects widely used in the world. Embankment is the main measure to prevent flood and protect residents and industrial and agricultural production. After the flood is restrained by the river embankment, the flood is confined to the flood path, which increases the water depth and the flow velocity of the constant flow, which is beneficial to flood discharge and sediment discharge. Levees can also withstand the winds and waves and resist the tide. In this paper, the design and construction of embankment in Chihu of Jiujiang County are studied. Mainly do the following work: 1) Hydrology, geological survey and analysis of engineering layout and main building design. Firstly, the layout of embankment line is studied. On the basis of analyzing the relevant data of hydrology and engineering geology, the layout of embankment line is selected based on the comprehensive consideration of the influence of the dike line strike, the scope of protection area and the benefit of project investment. Then, the drawing up of embankment section is determined through the comparison of schemes, and the main technical parameter of embankment section is determined. The main difficulty and engineering key of levee construction in the red lake is to pass through the lake with deep silt layer at the bottom of the lake. Therefore, considering the safety and construction plan of the comprehensive project, in order to obtain stable dike foundation and accurate engineering quantity, the project investment can be saved. It is necessary to carry out deep analysis on the process of silting. Due to the high thixotropy and rheology of the soft soil foundation such as silt, how to construct on the silt is always a difficult point in the construction of water conservancy engineering. In this paper, the results of desilting analysis and calculation are used to guide the construction, and through the comparative experiments of the field schemes, the construction scheme which is most suitable for the construction of the project is selected. The results show that the calculation results are reliable and can be used to guide construction. The correct choice of construction scheme is of great significance to guarantee the safety and quality of engineering construction and save investment.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV871

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