基于GIS的宣城市地质灾害等级预报预警系统

Xuancheng City’s Forecast and Warning System for Geological Hazard Levels Based on GIS

利用自然资源部门提供的地质灾害隐患点数据,建立了宣城市地质灾害数据库和历史雨量数据库。通过分析历史地质灾害数据和历史雨量数据,得出了地质灾害发生与降雨量的一些相关关系,初步设定了发生4种风险等级地质灾害的临界雨量。开发了一个基于GIS的精细化地质灾害气象等级预报预警系统。

According to the hidden point data of geological disaster provided by the department of Natural Resources, the Xuancheng Geological Disaster Database and the Historical Rainfall Database were established in this paper. With the analysis of historical data of geological disasters, as well as historical rainfall data, some correlations between geological disasters and rainfall were obtained, and the critical rainfall of four levels of geological disasters Risk Rating is preliminarily set;a GIS-based forecasting and early warning system for fine geological disaster meteorological grades was developed.