地质灾害综合评估与区划模型

Synthetical evaluation and classification model of geological hazards

利用模糊数学的相关理论,建立了基于多源信息融合的地质灾害综合评估数学模型;在该数学模型的基础上,通过GIS的空间分析功能,动态地获取数学模型中所涉及的参数,进而根据这些动态参数与空间数据库中的相关属性数据,采用快速判别分析的方法对评价单元的地质灾害进行区划研究。将该模型应用于湖南省地质灾害灾情的综合评估与区划工作中。实际应用结果表明,运用该模型能够动态、快速、准确地评估地质灾害灾情,并且其评估与区划的结果合理、可信。

After analyzing these factors and integrated with the advanced GIS technology, which has the strong power of space analysis and acquiring data dynamically, a regJonalizatJon model of the geological hazards is established based on the amalgamation method with many data resources and fuzzy judge synthetically. Then the parameters of the model are acquired dynamically by the space analysis of GIS, and with these parameters and the attribute data from the special database, the classification is accomplished. Since it doesn＇t need a defined artificial criteria, therefore, this method is much more objective. After applied in the investigation and evaluation of geological hazards of Hunan province, its result shows that the model can evaluate the geological disaster dynamically, quickly and exactly, and the result is very effective, reasonable and creditable.