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传统地质灾害数据库通常为静态数据库,不能记录灾害连续动态变化的信息,而时态GIS是解决该问题的方法。提出了基于事件的动态多级基态修正模型(DMBSAE),并基于DMBSAE模型和地质灾害时空过程概念模型,设计和构建了地质灾害时空数据库,并讨论了四库结构、时空数据组织的基本思路、数据库均衡化、时空数据在对象关系型数据库中的存储机制、历史状态再现、灾害体历史变化沿革回溯等关键问题。开发了地质灾害时态GIS系统(GH-TGIS),在地质灾害概率预测、地质灾害动态管理以及地质灾害演化对比分析等方面进行了应用。实践表明,DMBSAE模型能有效和便捷地存储、组织和管理海量地质灾害时空数据,具有较好的实际应用价值。
The traditional geohazard database is usually a static database, which can not record continuous dynamic changes of disasters, and the temporal GIS is a solution to this problem. A dynamic multi-stage ground state correction model (DMBSAE) based on event was proposed. Based on DMBSAE model and conceptual model of geological disaster space-time process, a geo-hazard space-time database was designed and constructed. The basic idea of the four- Database equalization, the storage mechanism of spatio-temporal data in object-relational databases, the reproduction of historical status and the retrospection of historical changes of disasters. The Geohazards Temporal GIS System (GH-TGIS) has been developed and applied in the prediction of the probability of geological disasters, the dynamic management of geological disasters and the comparative analysis of the evolution of geological disasters. Practice shows that the DMBSAE model can store, organize and manage massive geohazard space-time data effectively and conveniently, and has good practical value.