基于3S技术的宝天高速公路虚拟地理环境系统设计与实现

要建设兼顾交通、环保、生态等多方面要求的高标准山区高速公路,必须重视和加强地质环境工作,而遥感技术(RS)、地理信息系统(GIS)、全球定位系统(GPS)和虚拟地理环境技术可以在其中发挥巨大的辅助作用.依托宝(鸡)天(水)高速公路(牛背至天水段)项目,对3S(RS,GIS和GPS)技术支持下的道路虚拟地理环境设计与实现方法展开研究.讨论了系统建设的设计思路、方案和技术实现工作流程,以及数据建设工作流程,针对实际应用的需求,探讨了对系统整体性能进行优化的方法.研究表明,通过采用新的技术支持与实现手段,虚拟地理环境技术可以在道路工程建设过程的信息管理与信息可视化方面发挥巨大的辅助作用.

Design and Implementation of Virtual Geographical Environment System of Baoji-Tianshui Expressway Based on Technologies of GIS, GPS and Remote Sensing

Construction of freeway will promote the development of local economy,however it will impact on the vegetation,animal,geology,hydrology and water resource,Land-use pattern,air quality,human activity,and so on.Freeway project has the properties of long distance,multiple points as well as broad surface,and it's probable of affecting intensively on environment from various aspects throughout the period from constructing to making use of it.The environmental carrier of freeway in mountainous area is mainly natural environment, that is,geological environment.Among mountainous areas,the landform and geological condition is complicated,geological environment is vulnerable,geological disaster is frequent,considering of which,constructing expressway is inevitably to cut and fill carverns as well as building tunnel,those measures destroy geological environment seriously,result in or intensify various geological disasters,increase the unnecessary constructing investment,even bring about hidden trouble of safety during period of constructing and operating.To meet the need of constructing a high standard expressway among mountainous area while considering much factors such as traffic,environment protecting and ecology,we must attach importance to geological environment.As auxiliary tools,the 3S(GIS,RS,GPS) and virtual geographic environment technologies are very helpful to support resolving the actual problems.What we are doing in this research relies on an actual traffic project,a section from Niubei to Tianshui of the expressway from Baoji to Tianshui,which aims to design and make road virtual geographic environment coming true with the help of 3S technologies.