十五里河生态护坡改造与涵养地下水试验研究

发布时间：2017-12-27 10:25

本文关键词：十五里河生态护坡改造与涵养地下水试验研究　出处：《合肥工业大学》2016年硕士论文　论文类型：学位论文

【摘要】：长期以来,人们比较注重河道本身的行洪、排涝能力,传统城市河道岸坡防护一般采用混凝土或浆砌块石等硬质衬砌方法。传统护坡工程将整个河岸表面封闭起来,原先生长在岸坡上的生物很难继续生存,河流自净能力减弱。同时硬化的不透水的护坡阻碍了河道水与地下水的相互流通。传统河道护坡已不能适应城市河道边坡防护要求,因此需要研究适合城市河道的生态护坡技术,以达到修复城市河流生态环境,改善城市景观,从而推动生态城市建设的目的。本文在充分分析生态护坡改造及生态护坡涵养地下水国内外研究现状的基础上,主要完成了以下研究工作：(1)介绍生态护坡的内涵及国内外城市河道主要生态护坡型式,并分析其适应性及优缺点。(2)对合肥市十五里河进行了护坡现状调查,总结分析其存在的问题。(3)针对十五里河河道中存在的硬质化护坡、高坎陡坡和开敞缓坡这三种岸坡型式,分别提出了相应的生态化改造方案,并从稳定性、生态景观性和经济性三个方面进行分析比较。最终方案为：采用挂网铺草皮的方法来修复硬质护坡,进行高坎陡坡生态建设时选用荣勋砌块挡墙,开敞缓坡生态建设采用樟树、女贞、木槿、南天竺、二月兰和菖蒲的乔灌草结合植物搭配模式。(4)通过十五里河现场原型观测试验方法,分别对传统硬化直立挡墙、多孔生态砌块挡墙和植物自然护坡的地下水水位变化进行长期监测,通过分析计算得出,生态护坡在河道水体与地下水体间相互涵养作用方面的优势。研究结果表明：生态护坡对地下水体与河道水体间的相互涵养作用是显著的,采用生态砌块挡墙和植物护坡后的年净渗透量,分别是采用传统硬化挡墙年净渗透量的1.93倍和2.11倍,而在实际应用中效果可能会更好。
[Abstract]:For a long time, people pay more attention to the river itself, flood drainage capacity, the traditional city river bank protection by concrete or masonry hard lining method. The traditional slope protection project has closed the surface of the whole river bank. The original living creatures on the bank slope are difficult to survive, and the self purification capacity of the river is weakened. At the same time, the hardened and impervious slope hinders the circulation of water and groundwater in the river. Traditional river revetment is no longer suitable for urban river slope protection. Therefore, it is necessary to study ecological slope protection technology suitable for urban river so as to restore urban river ecological environment, improve urban landscape and promote the construction of eco city. Based on the analysis of ecological slope protection and reconstruction of ecological slope protection of groundwater conservation research status at home and abroad, the main contents were as follows: (1) introduce the connotation and the domestic and foreign city river main ecological slope protection of ecological protection, and analyzes its advantages and disadvantages. (2) a survey on the current situation of slope protection in the fifteen Li River in Hefei was carried out, and the existing problems were summarized and analyzed. (3) to fifteen in the river in the hard slope, steep slope and gentle slope Gaokan open the three slope type, respectively put forward ecological transformation plan, and analyzed from the three aspects of stability, landscape ecology and economy. The final solution is: using the method of hanging turf to repair hard slope, steep slope of Gaokan ecological construction with Rongxun retaining wall block, open slope ecological construction with camphor, privet, hibiscus, February, orchid and calamus of Nandina domestica Qiaoguan grass combining plant collocation mode. (4) by the method of experiment observation River in fifteen field respectively, the groundwater level of traditional vertical wall, hardening of porous ecological block retaining wall and plant natural slope were calculated by analyzing the long-term monitoring, ecological revetment in river water and underground water between conservation advantages. The results show that: ecological slope protection is significant to the mutual effect of underground water and river water conservation of the ecological retaining wall and slope protection block after years of net infiltration, respectively, using the traditional hardening retaining wall infiltration net 1.93 times and 2.11 times, while in practical applications may be better.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TV861

【相似文献】