基于Infoworks的城市排水模型的建立及应用

发布时间：2018-06-30 05:25

本文选题：排水管网 + InfoWorksICM　；参考：《昆明理工大学》2017年硕士论文

【摘要】：地下管线是城市的血脉,近年来随着城市的不断发展,地下管线规模的不断扩大,其逐渐暴露出诸多问题。尤其是到了雨季,国内许多城市都不同程度的陷入城市内涝,使人民群众的生命财产遭受了严重损失,这些问题都对城市规划和管理工作提出了新的挑战和要求。本文系统介绍了排水管网水力模型的概念、分类以及应用,回顾了国内外研究发展现状,对InfoWorks ICM软件的基本功能进行了分析概括。论文结合工程实例,基于InfoWorks ICM软件建立昆明市S水质净化厂排水管网水力模型,摸清该水质净化厂纳污范围内排水管网运行状况,并理清雨污混接情况。集水区的划分对于模型模拟结果的影响至关重要,以往的排水模型在进行集水区划分时,只是对大范围的管网进行系统自动化分,这样划分出来的集水区不能准确表示雨水进入雨水篦子的收水情况。本文在集水区的划分时,首先根据研究区内的正射影像图以及路网图,手动划分集水区,然后对划分的子集水区进行实地考察,根据实际情况对集水区进行调整。通过对两种不同的划分方式下的集水区进行比较,并对两种划分方式进行了五年一遇的暴雨强度的模拟对比,得出经实地考察的采用手动划分集水区的方式更能真实有效的反应研究片区的收水范围,更符合实际情况,更能提高模型准确性的结论。在优化集水区的基础上,根据昆明市暴雨强度公式设计暴雨强度曲线,利用排水模型运行不同设计降雨预案,分别选取1、5、50年一遇(设计降雨2小时)重现期模拟管网中节点的积水情况、洪水量过程等水力特征变化过程。其次对管网中管道的超负荷状态进行模拟,通过对比分析,验证模型的正确性,查找排水管网中存在的问题,为更好的维护管网的运行提供技术支持和理论依据。在模型建立过程中摸索出一整套的排水水力模型的工作程序,不仅为昆明市的排水系统设计及管理提供了参考和依据,也为国内其他城市的排水管网水力模型设计及管理方面提供了借鉴。
[Abstract]:Underground pipeline is the blood of the city. In recent years, with the development of the city and the expansion of the scale of the underground pipeline, it gradually exposed many problems. Especially in the rainy season, many cities in China are trapped in urban waterlogging to varying degrees, causing people's lives and property to suffer serious losses, these problems have put forward new challenges and requirements for urban planning and management. This paper systematically introduces the concept, classification and application of hydraulic model of drainage pipe network, reviews the research and development situation at home and abroad, and analyzes and generalizes the basic functions of InfoWorks ICM software. In this paper, based on InfoWorks ICM software, the hydraulic model of drainage pipe network in S water purification plant of Kunming City is established, and the operation status of drainage pipe network in the scope of water quality purification plant is found out, and the mixing of rain and pollution is clarified. The partition of catchment area is very important to the simulation result of the model. When the drainage model used to divide the catchment area, it only carries on the system automation division to the large-scale pipeline network. The watersheds divided in this way cannot accurately indicate the intake of Rain Water into the Rain Water grate. In this paper, the catchment area is divided manually according to the orthophoto map and road network map of the study area, and then the sub-catchment area is investigated on the spot, and the catchment area is adjusted according to the actual situation. Through the comparison of the catchment areas under two different division modes, and the simulation and comparison of the rainstorm intensity of the two kinds of division methods once in five years, It is concluded that the method of manually dividing the catchment area through field investigation can be used to study the water collection range of the region more truly and effectively, which is more in line with the actual situation and can improve the accuracy of the model. On the basis of optimizing the catchment area, according to the formula of rainstorm intensity in Kunming, the rainstorm intensity curve is designed, and the drainage model is used to run different design rainfall plans. The hydraulic characteristic changes of nodes and flood water flow in the pipe network were simulated during the recurrence period of 1 ~ 5 and 50 years (2 hours of design rainfall) respectively. Secondly, the pipeline overload state in the pipe network is simulated, and the correctness of the model is verified by comparison and analysis, and the problems existing in the drainage pipe network are found, which provides technical support and theoretical basis for better maintenance of the pipeline network operation. In the process of establishing the model, a whole set of working procedure of drainage hydraulic model is found out, which not only provides a reference and basis for the design and management of drainage system in Kunming, but also provides a reference for the design and management of drainage system in Kunming. It also provides reference for the design and management of hydraulic model of drainage pipe network in other cities in China.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU992

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