基于三维GIS的滑坡灾害监测预警系统及应用

为了减少或消除地质灾害的影响，基于地质勘察与监测资料，利用先进的计算机技术和三维可视化技术建立地质灾害监测预警系统显得十分的必要。在研究利用TIN方法建立地质体模型的基础上，将自动获取的监测数据通过北斗卫星的传输和三维地质体模型有机结合，进一步利用基于时间序列的方法，对监测数据进行预测分析，形成了一套完整的三维滑坡灾害预警系统，并提供剖面分析等实用GIS分析工具，从而提高滑坡灾害预警的快速性和直观性。基于四川雅安滑坡的工程实例，验证了系统的有效性。

Application of 3-D GIS to monitoring and forecast system of landslide hazard

To reduce or eliminate the damage caused by geologic disaster, based on the data of geological mapping and monitoring, it is vital to build a visual monitoring and forecast system of geological hazards by using advanced computer and 3-D visual techniques. We first use TIN method to build 3-D geological model, which are integrated with the data achieved automatically and conveyed by North Satellites; and then, using time-series based techniques, we analyze these data and build a complete 3-D monitoring and forecast system of slope disaster, and provide numerous applicable GIS tools such as section analysis tool, etc. As a result, the quickness and visual of warning of landslide disaster are enhanced. Finally, to validate the system, we examine the project of Xiakou landslide of Ya’an, Sichuan province.