【作者】 左文涛；

【导师】 刘东海；

【作者基本信息】 天津大学 ， 水工结构工程， 2012， 硕士

【摘要】 风暴潮灾害对于社会经济发展具有极大的危害性,因此前瞻性地对风暴潮灾害的洪水演进过程进行分析,对于制定沿海地区的社会经济发展规划具有重大意义。本文基于Google Earth软件,采用WebGIS技术框架和VC++编程语言,以天津市滨海新区为例,开展了基于Google Earth的风暴潮洪水演进动态可视化系统的研究。本文主要研究内容和取得成果如下:(1)提出了ArcGIS与Google Earth结合的防潮工程基础数据数字化的基本思路与方法,不仅实现了地形、滨海新区地貌、海堤及其他防潮工程的数字化建模,而且实现了Google Earth中地理数据基础数据库的导入与整合;并基于SketchUp、3DMax及AutoCAD软件,实现了海堤及防潮工程三维可视化,及其与Google Earth卫星遥感影像和航拍图像的有效耦合,可直观形象地反映各典型建筑物的外观及构造。(2)构造了风暴潮洪水演进数字模型,以及堤防溃决和越浪情况下的风暴潮溃口进水量计算模型,利用GIS建立的研究区域三维地形模型,采用种子蔓延算法,提出了任意溃口下风暴潮洪水淹进模拟方法,不仅克服了溃口位置事先确定情况下不能反映实际中溃口动态变化的弊端,而且实现了风暴潮洪水演进过程的动态可视化。(3)设计了风暴潮洪水演进动态可视化系统的总体框架;基于MFC应用程序框架开发了相关的系统模块,解决了Google Earth视图嵌入、溃口位置交互确定、种子蔓延算法的程序实现等技术问题;通过KML文件的编制,实现了风暴潮洪水演进过程的动态可视化显示和淹没范围、水深的交互查询等,并以天津市滨海新区为例开展应用研究,可为滨海地区海堤规划设计及风暴潮防灾减灾提供决策支持。更多还原

【Abstract】 Since the great harmfulness of storm surge disaster to the social and economic development, analyzing flood routing process of storm surge disaster is greatly significant for social-economic development planning in costal area. Therefore, employing Google Earth software, WebGIS technology framework and VC++ programming, taking Binhai New Area as a case, the study on dynamic visualization system of storm surge flood routing based on Google Earth is carried out in this paper. The main contents and achievements are as follows:(1) The method of ArcGIS and Google Earth-based digitalization of tidal defense engineering data is proposed. Therefore, not only the digital model of terrain, topography of Binhai New Area, seawall and other tidal defense engineering are established, but also the corresponding geographic information database can be imported and integrated into Google Earth. Meanwhile, based on SketchUp, 3DMax and AutoCAD software, three-dimensional visualization of seawall and other tidal defense engineering, and their effective coupling with satellite remote images and aerial images are achieved, which can reflect the buildings and their appearance intuitively.(2) Digital model of storm surge flood routing and calculation model of breach inflow in the case of dike-break and wave overtopping are established. By employing GIS-based 3D terrain model of study area and seed spread algorithm, a simulation method of storm surge flood routing with an arbitrary breach is presented. The method can not only consider the change of breach in practice, but also realize the dynamic visualization of flood routing process.(3) An overall framework of dynamic visualization system of flood routing process is designed. System modules are developed by using MFC to solve technical problems such as embedment of Google Earth view into the system, interactive locating of seawall breach and the implement of seed spread algorithm. Dynamic visualization of flood routing process and interactive query of submerged area and water depth are achieved through documenting KML files. Furthermore, its application to Binhai New Area is done to provide the decision-making support for costal seawall design and storm surge flood prevention and mitigation.更多还原