崇阳溪生态低影响开发模式及通航措施研究

发布时间：2018-11-11 11:47

【摘要】：河流开发是社会经济发展中不可或缺的一环,国内外已经出现了很多由于河流开发模式选取不当而造成生态环境危机的案例,因此对河流开发模式的研究有特别重要的意义。本文通过分析以往河流开发模式的经验教训,借鉴在其他领域运用成熟的低影响开发概念,提出了一种适合山区河流开发的模式,以达到开发不利影响最小化目的。从崇阳溪开发和山区河流生态通航两个层次论证了该模式的可行性。主要研究内容包含以下方面:(1)提出了一种符合山区河流的通用开发模式:山区河流生态低影响开发模式。基于定性分析以往开发模式经验教训基础上,借鉴了雨洪管理中运用较为成熟的低影响开发概念,提出了山区河流生态低影响开发模式的核心理念以及决策路线,建立了一套符合山区河流的开发思路,并提出了相应的开发原则。(2)利用模糊层次分析法,将定性决策的开发影响因素用定量观点来衡量其在开发中的重要性,用以指导山区河流的具体开发。应用该方法对崇阳溪生态低影响开发内容进行排序,为开发主体提供科学决策依据。(3)运用Navier—Stokes方程,建立漂木道三维水流RNG k-?紊流数学模型对漂木道的自然流态进行模拟,根据数值模拟结果分析出漂木道在自然流态条件下不适宜直接用于通航,利用GMO模型对船体在漂木道中的航行分析结果进行了验证,并在生态低影响开发的原则指引下提出了一种漂木道改通航措施,将改造措施的影响范围缩小至漂木道内部。研究结果表明,山区河流生态低影响开发模式可以很好的解决河流开发中的社会效益、经济效益以及生态效益之间的相互关系,并且在对河流最小影响的基础上对漂木道成功进行了改通航设施建设,产生了积极的社会、经济效益。
[Abstract]:River development is an indispensable part of social and economic development. There have been many cases of ecological environment crisis caused by improper selection of river development mode at home and abroad, so the study of river development model is of special significance. By analyzing the experiences and lessons of the previous river development models and using the mature concept of low impact development for reference in other fields, this paper puts forward a model suitable for the development of mountain rivers, in order to minimize the adverse effects of development. The feasibility of this model is demonstrated from the two levels of Chongyang River development and mountain river ecological navigation. The main contents of this paper are as follows: (1) A general development model for mountain rivers is proposed: the ecological low impact development model of mountain rivers. Based on the qualitative analysis of the experience and lessons of the past development models and the application of the mature concept of low impact development in rain flood management, this paper puts forward the core idea and decision-making route of the ecological low impact development model of mountain rivers. In this paper, a set of development ideas for mountain rivers is established, and corresponding development principles are put forward. (2) using fuzzy analytic hierarchy process (FAHP), the importance of qualitative decision making influencing factors in development is measured from a quantitative point of view. To guide the specific development of mountain rivers. This method is used to sort the development contents of Chongyangxi ecological low impact, and to provide scientific decision basis for the main body of development. (3) using Navier-Stokes equation, the three-dimensional flow RNG k-k of driftwood channel is established. The mathematical model of turbulent flow is used to simulate the natural flow state of driftwood channel. According to the results of numerical simulation, it is concluded that the drift channel is not suitable for direct navigation under the natural flow condition. Based on the GMO model, the navigation analysis results of the ship in the driftwood channel are verified, and under the guidance of the principle of ecological low impact development, a kind of navigational measures are put forward to reduce the influence range of the improvement measures to the interior of the driftwood track. The results show that the ecological low impact development model of mountain rivers can solve the relationship among social, economic and ecological benefits in river development. And on the basis of the minimum influence on the river, the construction of the navigational facilities for the driftwood channel has been successfully carried out, which has produced positive social and economic benefits.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U697;TV213.9

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