基于多源信息融合的湖南省地质灾害区划分析

Evaluation and classification of geological hazards based on various source information combined in Hunan Province

分析了湖南省地质灾害的种类和规模,总结了当前地质灾害评估及预测的方法和手段。并针对湖南省地质灾害分布特点,利用模糊数学相关理论,通过GIS的空间分析功能,采用快速判别分析方法,建立了基于多源信息融合的地质灾害综合评估数学模型,对湖南省的地质灾害进行了区划分析。结果表明,该方法可以动态、快速、准确的将湖南省地质灾害危险程度分为极危险区、重危险区、中度危险区、微度危险区、无险区,为湖南省地质灾害的防治及治理提供了科学的依据。

The category and scale of geological hazards in Hun＇s Province were analysed. Then the ways of evaluation and forecast of geological hazards were summarized. Considering the characters of geological hazards in Hunan Province, the comprehensive evaluation and classification model of the geological hazards based on the amalgamation method with many source information was established by fuzzy quick judging method and with the function of space analysis of GIS, acquiring data dynamically of geographic information systems. And then it was applied in the investigation and evaluation of geological hazards of Hunan Province. The result shows that the method can distinguish the criticality of geological hazards in Hunan Province to five zones such as the critical danger zones, the severe danger zones, the common mederate zones, the tiny danger zones and no danger zones dynamically, quickly and exactly, which supplies the scientific foundation for the prevention and treatment of geological hazards.