【作者】 允爽；

【导师】 刘志强；

【作者基本信息】 天津大学 ， 市政工程， 2010， 硕士

【摘要】 我国是一个缺水国家,特别是人均水资源量远低于世界平均水平。在人口聚集的城市,随着居民生活及工业用水量增长,地下水过度开采,天然水体污染加剧,用水危机日益突显。我国大部分地区属于大陆性季风气候,夏季雨水充沛。城市化的发展对城市地表雨水径流产生了诸多影响,城市传统的排水系统旨在及时将雨水排除,造成了水资源的严重浪费。为了调和两方面的矛盾,雨水利用应运而生,且越来越受到人们的重视。城市生活社区是城市雨水排水系统的起始端,如果实现社区的雨水利用,一方面增加城市可利用水资源,另一方面从源头减少雨水外排量,有利于缓解城市雨水管网压力,达到事半功倍的效果。为了达到对社区雨水利用效果的评估,可以对社区的雨水排水系统进行模拟,分析雨水利用对系统运行产生的影响。本论文以天津某高校新校区分流制雨水排水系统设计为背景,研究雨水管网模拟技术在雨水排水系统设计当中的应用;提出适应新校区的雨水利用方法,并对雨水利用前后雨水排水系统的运行状态进行对比分析。文中介绍了国内外雨水利用的现状和主要工程方法,及作为模拟工具的国内外比较成熟的管道系统模拟软件;总结了我国水资源现状,城市化发展对城市径流带来的影响;通过对我国城市降雨量,城市不同下垫面上雨水径流水质,及雨水利用的方法和效益等进行综合分析,得出雨水利用在我国大部分地区是可行的结论;利用InfoWorksCS软件对新校区设计雨水管网的模拟,得到雨水利用前管网的运行状态;根据新校区的总体规划提出合理的雨水利用方案,并对雨水利用后的新模型进行模拟,分析雨水利用对此新校区设计雨水管网运行状态产生的影响。本论文从城市雨水系统的源头入手,分析雨水利用的可行性。另外将雨水管网系统的模拟与雨水利用的研究相结合,评价雨水利用对管网运行状态的影响,对雨水利用的方案设计、雨水管网的设计、雨水利用的效益分析等提供重要支持。更多还原

【Abstract】 China is a water-scarce county, per capita water occupancy volume is much lower than the world average. With the growth of residents’ water consumption, overexploitation of underground water and pollution of water resource, water crisis is becoming more and more serious in populous cities. China has a continental monsoon climate in most parts, with plenty of rain in summer. The development of urbanization greatly impact on rainwater runoff. Traditional stormwater drainage system is designed to discharge the rain immediately, which always results in wasting water. Rainwater utilization drew more and more attention in recent years.As the starting side of the stormwater drainage system, rainwater utilization in living district will reduce the displacement of rain and increase the quantity of available water. In this thesis, community drainage system was simulated in order to evaluate the effect of community rainwater utilization.By simulating a new designed campus stormwater drainage system of a university in Tianjin, this thesis is to study on the application of simulation technology on design of rainwater pipe network.First, this paper aims to find appropriate methods rainwater utilization for the new campus, and then analysis the simulation results of the designed network before and after the utilization.This paper introduces the methods and major projects of rainwater utilization, mature pipe network simulation software at home and abroad. This paper summarizes the water resources situation in China and the effects of urbanization on rainwater runoff.After the analysis on rainfall precipitation, rainwater qualities of different underlying surfaces of cities in China, rainwater utilization is proved feasible in most cities, and will bring enormous economic and environmental benefits. Some concrete methods for utilizing rainwater have been proposed according to the actual condition. This paper evaluated the impacts of the use of rainwater on the stormwater drainage system by comparing the simulation results of the designed network before and after the utilization. This paper combined rainwater utility with the rainwater drainage system simulation, provided basis for rainwater utilization and rainwater pipe network designing.更多还原