雅安市雨城区大兴水电站减水河段河流生态修复技术研究

发布时间：2019-06-29 14:16

【摘要】：雅安市境内水系发育,主要有青衣江、大渡河两大水系及其众多支流,流域面积在30 km2以上的河流有131条,总长3118km,水电能资源丰富,水力资源蕴藏量1601万kw,可建水电装机1322万kw。经过多年的水电站建设,所有的开发任务基本完成,经济效益巨大。大兴水电站的建设造成了3.11km的减水河段,减水河段位于四川省雅安市雨城新城区姚桥新区内的青衣江主河道内。河段减水的形成,会改变原河道水文情势,对该河段河道生态景观及河道的水生生境产生一定的影响,同时也对河岸植被可供水量产生一定影响,破坏河岸景观生态。加之减水河段河道内砂石的采挖,致使河床裸露、凌乱不堪,对城区自然景观造成较大的破坏,并存在一定的安全隐患。本论文的研究目的是通过对雅安市雨城区大兴水电站减水河段现状的分析,研究探索出一套适合于该减水河段的河流生态修复方法。本论文的研究秉承“安全”“人与自然和谐相处”等原则,采用工程措施和生态修复措施,工程措施包括：橡胶坝工程、防洪堤工程和河道疏浚工程；生态修复措施包括：水体景观措施和陆上景观措施。本研究不仅要完成传统的河道治理,还要使河流恢复到自然景观状态。针对大兴水电站减水河段存在的问题,在工程措施的基础上对减水河段进行生态修复研究,使减水河段的河段环境得到改善,美化环境。
[Abstract]:The development of the water system in the city of Ya 'an is mainly composed of the two water systems of the Qingyi River and the Dadu River and its many tributaries. There are 131 rivers in the area of over 30 km2, with a total length of 3118 km, the water and electricity resources are abundant, the reserves of the water resources are about 160,000 kw, and the hydropower installation capacity of 132.2 million kw can be built. After many years of hydropower station construction, all the development tasks are basically completed, and the economic benefit is huge. The construction of Daxing Hydropower Station has caused 3.11 km of water-reducing reach, and the water-reducing reach is located in the main river channel of the Qingyi River in the new district of YAO Bridge in Yan 'an City, Sichuan Province. The formation of water-reducing water in the reach will change the hydrological situation of the original channel, have a certain influence on the ecological landscape of the river channel and the aquatic habitat of the river channel, and also have a certain influence on the water supply amount of the riverbank vegetation, and destroy the landscape ecology of the riparian. In addition, the excavation of sand and gravel in the river channel of the water-reducing reach causes the riverbed to be exposed and is in a mess, which causes great damage to the natural landscape of the urban area, and has certain potential safety hazard. The purpose of this paper is to study and explore a set of river ecological restoration methods suitable for the water-reducing reach through the analysis of the current situation of the water-reducing reach of Daxing Hydropower Station in Yan 'an City. The research of this thesis is based on the principle of ""safety" and nature harmony", and adopts engineering measures and ecological restoration measures. The engineering measures include: rubber dam project, flood control embankment project and river channel dredging engineering; and the ecological restoration measures include: In view of the problems existing in the water-reducing reach of Daxing Hydropower Station, the ecological restoration of the water-reducing reach is carried out on the basis of the engineering measures. So that the environment of the reach of the water-reducing reach is improved, and the beautifying environment is improved.
【学位授予单位】：四川农业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：X171.4;TV882.8

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