地球信息科学学报 ›› 2015, Vol. 17 ›› Issue (2): 215-221.doi: 10.3724/SP.J.1047.2015.00215

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时空过程网络可视化模拟与分析服务——以溃坝洪水为例

朱军1,2,3(), 尹灵芝1,2, 曹振宇3, 张翔1,2, 徐柱1,2,4, 龚竞3   

  1. 1. 西南交通大学地球科学与环境工程学院,成都 611756
    2. 西南交通大学高速铁路运营安全空间信息技术国家地方联合工程实验室,成都 610031
    3. 四川省应急测绘与防灾减灾工程技术研究中心,成都 610041
    4. 轨道交通安全协同创新中心,成都 610031
  • 收稿日期:2014-11-12 修回日期:2014-12-08 出版日期:2015-02-10 发布日期:2015-02-10
  • 作者简介:

    作者简介:朱 军(1976-),男,博士,副教授,博导,主要从事虚拟地理环境与时空过程建模方面的研究。E-mail:vgezj@163.com

  • 基金资助:
    国家自然科学基金项目(41271389、41001252);长江学者和创新团队发展计划(IRT13092);测绘地理信息公益性行业科研专项项目(201412010);国家基础测绘科技项目“省级应急测绘指挥平台研究与开发”;四川省测绘地理信息局科技支撑项目“自然灾害地理信息发布平台关键技术研究”

Network Simulation and Visual Analysis of Spatiotemporal Process: A Case Study of Dam-break Flood Routing

ZHU Jun1,2,3,*(), YIN Lingzhi1,2, CAO Zhenyu3, ZHANG Xiang1,2, XU Zhu1,2,4, GONG Jing3   

  1. 1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China
    2. State-province Joint Engineering Laboratory of Spatial Information Technology for High-speed Railway Safety, Chengdu 610031, China
    3. Sichuan Engineering Research Center for Emergency Mapping & Disaster Reduction, Chengdu 610041, China
    4. Collaborative Innovation Center for Rail Transportation Safety,Chengdu 610031, China
  • Received:2014-11-12 Revised:2014-12-08 Online:2015-02-10 Published:2015-02-10
  • Contact: ZHU Jun E-mail:vgezj@163.com
  • About author:

    *The author: SHEN Jingwei, E-mail:jingweigis@163.com

摘要:

洪水溃坝等复杂灾害现象的时空过程模拟分析,是当前国际地理信息科学热点研究方向之一。随着网络的普及化,公众对GIS时空分析模型的网络实时集成和可视化分析提出了迫切的需求。本文以溃坝洪水为例开展了时空过程网络可视化模拟与分析服务研究,利用WebGL、HTML5、Ajax、Web Service、GPU并行计算等技术手段,通过探讨溃坝洪水时空模型计算优化、网络三维可视化模拟与动态交互分析等关键技术,研发了原型系统并进行应用实验。实验结果表明,本文研究成果有助于实现时空过程信息的网络发布,在线影响分析及动态可视化服务,可为分布式网络环境下溃坝洪水等时空过程信息管理和应急决策提供科学依据和技术支持。

关键词: 时空过程模拟, 网络GIS服务, 溃坝洪水, 可视化交互分析, WebGL

Abstract:

Many complicated geographic phenomena such as dam-break flood were complex giant systems, and the dynamic development of their spatiotemporal process is more important than the final formation of the spatial pattern. Therefore, the simulation and analysis of spatiotemporal process and the disaster forecasting warning have become a hot research direction in the field of geographic information science. Meanwhile, with the popularization of Web-GIS technology, the integration of real-time content on web and the visual expression of geographic spatiotemporal process simulation are also demanded by the public urgently. With the rapid development of web service, network technology and their applications in GIS, it is possible to realize the visualization analysis, share and manage distributed spatial data on different clients. After analyzing the latest Web-GIS technology, this paper focuses on the simulation and visual analysis of dam-break flooding spatiotemporal process in the network environment, which can be implemented by applying HTML5, WebGL, Ajax, Web Service technology and other technologies. Some key technologies, which include rapid computing of spatiotemporal process model, B/S network architecture construction, three-dimensional scene rendering optimization, and dynamic interaction analysis, are also discussed in details. Finally, a prototype system was constructed and an experiment of the network simulation and visual analysis of a dam-break flood spatiotemporal process case was conducted on a study region. Experimental results showed that the methods addressed in this paper could successfully publish spatiotemporal process information, conduct online impact analysis and realize the three-dimensional visualization representation under the network environment, which could meet different requirements of browsing, querying and analyzing. It can provide an efficient support to dam-break management and emergency decision-making.

Key words: spatiotemporal process simulation, WebGIS service, dam-break flood, interactive visualization analysis, WebGL