基于降雨在黄土地质灾害发生过程中的关键作用，在集成地质、地理等基础数据，以及降雨等实时数据的基础上，设计并开发了延安市地质灾害气象预警系统。以 Client／Server 和 Browser／Server 模式建立系统的框架，利用信息量模型进行延安市地质灾害易发分区评价，设定三类降雨预警指标实现延安市地质灾害气象预警分级系统，应用系统的预警分析模块计算全区气象预警级别，并发布预警信息。经2013年“7.3”暴雨过程期间进行的汛期灾害调查结果验证分析，预警准确率达到94.3％，证明了系统的可靠性和准确性，该系统可作为合适的地市级地质灾害预警平台予以应用。%Based on the key role of rainfall in the process of loess geological disasters,integrating the data of geology,geography,and real-time rainfall,a meteorological early-warning system of geological hazard in Yanan is designed and completed.The system framework is established with Client/Server and Browser/Server model,using the Information Model to evaluate the geological hazard susceptibility of Yanan,setting 3 types of rainfall warning indicators as Yanan geological hazard meteorological early-warning classification model,and through the early-warn-ing module of software to determine the early-warning level and release information at last.By 2013,“7.3”contin-ually heavy rain process of flood period geological hazard investigation results verified the early warning accuracy reached 94.3%,proved the reliability and accuracy of the system.
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