...
首页> 外文期刊>Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of >Dam-Break Flood Routing Simulation and Scale Effect Analysis Based on Virtual Geographic Environment
【24h】

Dam-Break Flood Routing Simulation and Scale Effect Analysis Based on Virtual Geographic Environment

机译:基于虚拟地理环境的溃坝洪水演进仿真与规模效应分析

获取原文
获取原文并翻译 | 示例
           

摘要

Because of the barrier lake affected by highly changing and complex environment, it is always a great challenge that proper actions must be performed within a limited amount of time. Thus, how to scientifically and efficiently analyze the dam-break risk of the barrier lake and its impact area is very important for barrier lake disposal and downstream communities transfer. To improve the efficiency and the accuracy of the dam-break flood routing simulation, this paper mainly focuses on the construction of the virtual geographic environment (VGE) system and the scale effect analysis. Unlike most of the current cellular automata (CA)-based flood simulation systems, the proposed VGE system can offer an intuitive, efficient, and interactive visualization environment through which users can explore complicated spatial information and conduct risk assessment work. Some key technologies including the CA model of dam-break flood, the VGE system framework, the impact analysis method, and the scale effect analysis method were discussed in detail. A prototype system was developed to support dam-break simulation and risk analysis of the Xiaojiaoqiao barrier lake in Anxian County, Sichuan Province of China. By means of a variety of cell scales effect analysis experiments, the adaptation scope and characteristics of multiscale cells were obtained to implement the simulation analysis of the dam-break flood routing better. The proposed VGE system can improve the efficiency of risk assessment and decision-making.
机译:由于屏障湖受到高度变化和复杂环境的影响,因此必须在有限的时间内执行适当的操作始终是一个巨大的挑战。因此,如何科学有效地分析堰塞湖及其影响区的溃坝风险,对于堰塞湖的处置和下游社区的转移具有十分重要的意义。为了提高大坝溃坝洪水模拟的效率和准确性,本文主要研究虚拟地理环境(VGE)系统的构建和规模效应分析。与大多数当前基于蜂窝自动机(CA)的洪水模拟系统不同,拟议的VGE系统可以提供直观,有效和交互式的可视化环境,用户可以通过该环境探索复杂的空间信息并进行风险评估工作。详细讨论了溃坝洪水的CA模型,VGE系统框架,影响分析方法和规模效应分析方法等关键技术。开发了一个原型系统,以支持中国四川省安县小交桥屏障湖的溃坝模拟和风险分析。通过各种单元尺度效应分析实验,获得了多尺度单元格的适应范围和特征,从而更好地进行了溃坝洪水路径的仿真分析。提出的VGE系统可以提高风险评估和决策的效率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号