汾河中下游生态治理工程蓄水坝的优化设计研究

发布时间：2018-08-03 13:30

【摘要】：河流是现代城市的重要资源和环境承载体,其不仅在城市存亡发展中占据重要地位,同时是影响城市形象,美化城市环境的重要因素。城市河流不但应有防御洪水、排涝减灾、调水引清、蓄水灌溉、内陆航运等基本功能,还应肩负起美化城市环境,调节小流域气候,平衡区域生态系统等功能。作为山西第一大河,黄河第二大支流的汾河,流域内自然资源丰富,生产条件得天独厚,是山西的政治、经济、文化中心。由于经济社会的快速发展和人口的急剧增长,流域内生态环境受到了严重破坏。山西省政府在“十三五”规划中制定了汾河流域生态修复重大的战略,本文依托于山西河中下游段生态治理工程进行蓄水坝优化设计研究。本论文在研究学习了国内外河道治理和蓄水坝的研究现状基础上,基于汾河中下游段生态治理工程的实际,进行以下方面的研究:1)在分析研究液压升降坝工作原理及特点的基础上,运用有限元分析软件ansys分析研究了坝面与支撑杆接触方式,坝面尺寸,坝面安放角度等因素对液压升降坝受力结构特性的影响,对设计单位推荐使用的4m高液压升降坝进行整体结构特性分析,针对不安全因素提出解决方案。2)分析液压升降坝在坝顶过流、局部开启过流及塌坝过流时的流量特性,利用Visual Basic6.0及SQLSever2000编写液压升降坝过流流量计算程序,并对不同工况下的过流特性进行分析。3)依据液压控制系统的设计原则、功能、液压启闭系统组成及计算机电气控制系统的需求,进行液压启闭系统流程设计、液压控制系统结构设计,对控制系统主要硬件进行选择。4)在上述研究的基础上,进行液压升降坝系统的水工设计,利用组态王软件进行液压控制系统开发,基于过流计算的成果,提出工程日常运行控制和管理的模式。液压升降坝在实际应用中有诸多优点,但由于其理念提出及实际应用时间较短,目前对液压升降坝理论研究资料较少。本研究旨在以上优化研究的基础上,总结理论经验,以期为山西汾河流域生态修复工程及沁河、滹沱河等7大流域的生态修复工程的建设提供技术支持。对不同工作环境(多泥沙及冰冻)、不同尺度、不同类型液压升降坝的结构分析、过流流量公式实验验证是下一步的研究方向。
[Abstract]:Rivers are important resources and environmental carriers of modern cities. They not only play an important role in the development of cities, but also affect the image of cities and beautify the urban environment. Urban rivers should not only have the basic functions of flood prevention, flood drainage and disaster reduction, water diversion, water storage and irrigation, inland shipping, but also should shoulder the functions of beautifying the urban environment, regulating the climate of small watersheds and balancing the regional ecosystem. As the largest river in Shanxi and the second tributary of the Yellow River, Fenhe River is rich in natural resources and unique in production conditions. It is the political, economic and cultural center of Shanxi Province. Due to the rapid development of economy and society and the rapid growth of population, the ecological environment in the basin has been seriously damaged. In the 13th Five-Year Plan, Shanxi Provincial Government has formulated the important strategy of ecological restoration in Fenhe River Basin. This paper is based on the ecological control project in the middle and lower reaches of Shanxi River to study the optimal design of water storage dam. On the basis of studying the current situation of river treatment and water storage dam at home and abroad, this paper is based on the reality of the ecological control project in the middle and lower reaches of Fenhe River. On the basis of analyzing and studying the working principle and characteristics of hydraulic lifting dam, the contact mode between dam surface and supporting rod and the size of dam surface are studied by using finite element analysis software ansys. The influence of the angle of the dam surface on the structural characteristics of the hydraulic lift dam is analyzed, and the overall structural characteristics of the 4m high hydraulic lift dam recommended by the design unit are analyzed. In view of the unsafe factors, the paper puts forward a solution (.2) to analyze the flow characteristics of hydraulic lifting dams when the dam top overflows, local open overflows and collapse dams overflow. The Visual Basic6.0 and SQLSever2000 are used to compile the hydraulic lifting dam flow calculation program. According to the design principle and function of hydraulic control system, the composition of hydraulic hoist system and the requirement of computer electrical control system, the flow chart of hydraulic hoist system is designed. On the basis of the above research, the hydraulic engineering design of hydraulic lifting dam system is carried out, and the hydraulic control system is developed by using Kingview software. Based on the results of overcurrent calculation, the control and management mode of engineering daily operation is put forward. Hydraulic lifting dam has many advantages in practical application, but because of the short time of its concept and practical application, there are few theoretical research data on hydraulic lift dam at present. The purpose of this study is to sum up the theoretical experience on the basis of the above optimization study, in order to provide technical support for the ecological restoration project of Fenhe River Basin in Shanxi Province and the construction of ecological restoration engineering in Qinhe River Basin and Hutuo River Basin. It is the next research direction to analyze the structure of hydraulic lift dam in different working environment (silt and freezing), different scale and different types of hydraulic lifting dam, and to verify the formula of overflow flow.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV85;TV64

【相似文献】