基于海绵城市理念的城镇雨水系统规划方案模拟与评价

发布时间：2019-04-26 09:24

【摘要】：随着我国城市化进程的加剧,区域生态水文平衡被破坏,城市发展过程中需要面对城市缺水与雨水流失问题、暴雨洪涝灾害问题和雨水径流污染问题等,海绵城市这一新兴理念应运而生,其核心是应对城市雨水问题,使城市在适应环境变化和应对自然灾害等方面具有良好的“弹性”。本文首先对海绵城市理念的内涵、关键问题、主要技术措施进行了探讨;将海绵城市理念相关的低冲击开发(LID)、推进管、深层隧道系统这三种技术措施对径流量削减效果、优缺点及适用条件进行了文献归纳,并据此进行综合比较分析。其次对目标地块属性和水文情况进行概述,在此基础上,用Infoworks ICM软件建立了目标地块的现状雨水系统模型。根据目标地块现状雨水管网模型在不同降雨强度和雨型的降雨事件下的模拟结果,基于海绵城市理念设计了LID、推进管和深层隧道三套改造方案,建立三种方案的区域雨水模型。通过对在不同降雨强度及雨型的降雨事件下目标地块三种改造方案的雨水模型进行模拟,对照现状情况,对目标地块径流总量、径流峰值的削减情况及径流时间参数的变化情况进行总结分析并对各方案的区域雨水管网排水性能进行评价。最后,采用模糊层次分析法,初步建立评价体系,对改造后的三种方案进行综合评价,为海绵城市理念的探讨与实践提供参考。
[Abstract]:With the intensification of urbanization in China, the regional ecological and hydrological balance has been destroyed. In the process of urban development, the problems of urban water shortage and Rain Water loss, rainstorm and flood disasters, Rain Water runoff pollution and so on, need to be faced. Sponge city emerged as the times require, its core is to deal with the problem of city Rain Water, so that the city in adapting to environmental changes and responding to natural disasters and other aspects of good "elasticity". Firstly, this paper discusses the connotation, key problems and main technical measures of the concept of sponge city. Three technical measures, low impact development (LID), propulsion pipe and deep tunnel system, which are related to the concept of sponge city, are summarized in literature on the effect of runoff reduction, advantages and disadvantages as well as applicable conditions, and a comprehensive comparative analysis is carried out according to these three technical measures. Secondly, the attribute of the target parcel and the hydrological situation are summarized. On the basis of this, the Rain Water system model of the target parcel is established by using Infoworks ICM software. According to the simulation results of Rain Water pipe network model under different rainfall intensity and rainfall type, based on the concept of sponge city, three reconstruction schemes of LID, propulsion pipe and deep tunnel are designed. The regional Rain Water model of three schemes is established. By simulating the Rain Water model of three reconstruction schemes of the target plot under different rainfall intensity and rainfall type, the total runoff of the target plot is compared with the present situation. The reduction of runoff peak value and the variation of runoff time parameters are summarized and analyzed, and the drainage performance of Rain Water pipe network in each scheme is evaluated. Finally, the fuzzy analytic hierarchy process (FAHP) is used to establish the evaluation system and evaluate the three schemes after transformation, which provides a reference for the discussion and practice of the concept of spongy city.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X52

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