基于WebGIS的汶川地震次生地质灾害信息管理系统

汶川地震次生地质灾害数量多、分布广且类型复杂,严重威胁灾区人民的生命财产安全。为了分析次生地质灾害发育分布规律,并用于减灾防灾,急需一种有效的方法来对现场调查获取的大量地质灾害数据进行管理。以信息建模理论为指导,运用统一建模语言UML,并结合GIS空间数据模型分析,以建立面向对象的空间数据模型,及实现海量地灾信息综合管理为目的,研发了汶川地震次生地质灾害信息综合管理系统(WIMS)。利用GIS的强大空间图形管理能力、数据库技术以及网络开发等技术,以发布图形服务与数据服务的方式实现地质灾害数据共享,解决了空间数据编辑及提升地图访问速度的关键技术问题。该系统不仅能够为灾害管理部门制定防治方案提供一定的参考依据,并且能够为广大群众提供一个认识地质灾害的公共平台,提高全民防灾意识。

WebGIS-based Information Management System for Geohazards Triggered by Wenchuan Earthquake

More than thousands of geohazards triggered by Wenchuan Earthquake,for the complexity of characteristics,which seriously threatened the lives and properties of local people in the disaster areas.In order to analysis the distribution regularity and reduce the shecondary geohazard,it needs an effective method to manage the abundance of data from field investigation as soon as possible.Combined with analysis of spatial data model and modeling theory,this paper used the Unified Modeling Language(UML) to establish the object-oriented geodatabase,and finally developed the WebGIS-based information management system for geohazards triggered by Wenchuan Earthquake(WIMS).Based on the powerful ability for managing spatial data of GIS,database and internet development techonology,the system is an online GIS providing map and data services,likewise improving spatial data editting and speed of map visiting.Besides,the system is not only able to be a reference for the geohazard managers,but also a common platform for other people to understand the threats from natural hazards.