针对当前新型基础测绘建设中开展的基础地理信息数据库三维化、实体化升级改造探索,本文提出了借鉴瑞士三维地形数据库(Swisstopo 3D geodata)建设的相关技术方法。分析了Swisstopo 3D geodata的数据结构与内容,以及其实现各类地形实体...针对当前新型基础测绘建设中开展的基础地理信息数据库三维化、实体化升级改造探索,本文提出了借鉴瑞士三维地形数据库(Swisstopo 3D geodata)建设的相关技术方法。分析了Swisstopo 3D geodata的数据结构与内容,以及其实现各类地形实体对象三维化、实体化的技术方法,并介绍了其数据采集更新与数据应用情况等其他内容。在此基础之上,探讨了其对我国新型基础测绘建设的借鉴意义:(1)我国应加快新型基础测绘建设,为"两服务、两支撑"提供高质量的基础时空信息保障;(2)三维矢量模型技术是实现基础地理信息数据库三维化升级的一条可行的技术路线;(3)建筑物三维模型产品设计应体现基础性与公益性要求。展开更多
探讨了一种车辆平顺性虚拟试验的方法 :利用 Multi Gen Creator工具对二维和三维图形进行绘制编辑 ,形成虚拟试验场的三维图形数据库 ,然后由 Open GVS SDK通过调用图形数据库及对 Open GVS中通道、场景、光照、相机等资源的编程 ,建立...探讨了一种车辆平顺性虚拟试验的方法 :利用 Multi Gen Creator工具对二维和三维图形进行绘制编辑 ,形成虚拟试验场的三维图形数据库 ,然后由 Open GVS SDK通过调用图形数据库及对 Open GVS中通道、场景、光照、相机等资源的编程 ,建立了模拟真实环境的虚拟道路试验场。研究表明 ,用 Open GVS SDK软件建立的虚拟试验场环境逼真 ,拟实效果好。在用鼠标、键盘等外部输入工具进行场景控制时 ,响应快、实时性好。该技术与虚拟样机技术相结合 。展开更多
By the aid of the international mining software SURPAC, a geologic database for a multi-metal mine was established, 3D models of the surface, geologic fault, ore body, cavity and the underground openings were built, a...By the aid of the international mining software SURPAC, a geologic database for a multi-metal mine was established, 3D models of the surface, geologic fault, ore body, cavity and the underground openings were built, and the volume of the cavity of the mine based on the cavity 3D model was calculated. In order to compute the reserves, a grade block model was built and each metal element grade was estimated using Ordinary Kriging. Then, the reserve of each metal element and every sublevel of the mine was worked out. Finally, the calculated result of each metal reserve to its actual prospecting reserve was compared, and the results show that they are all almost equal to each other. The absolute errors of Sn, Pb, and Zn reserves are only 1.45%, 1.59% and 1.62%, respectively. Obviously, the built models are reliable and the calculated results of reserves are correct. They can be used to assist the geologic and mining engineers of the mine to do research work of reserves estimation, mining design, plan making and so on.展开更多
文摘针对当前新型基础测绘建设中开展的基础地理信息数据库三维化、实体化升级改造探索,本文提出了借鉴瑞士三维地形数据库(Swisstopo 3D geodata)建设的相关技术方法。分析了Swisstopo 3D geodata的数据结构与内容,以及其实现各类地形实体对象三维化、实体化的技术方法,并介绍了其数据采集更新与数据应用情况等其他内容。在此基础之上,探讨了其对我国新型基础测绘建设的借鉴意义:(1)我国应加快新型基础测绘建设,为"两服务、两支撑"提供高质量的基础时空信息保障;(2)三维矢量模型技术是实现基础地理信息数据库三维化升级的一条可行的技术路线;(3)建筑物三维模型产品设计应体现基础性与公益性要求。
文摘探讨了一种车辆平顺性虚拟试验的方法 :利用 Multi Gen Creator工具对二维和三维图形进行绘制编辑 ,形成虚拟试验场的三维图形数据库 ,然后由 Open GVS SDK通过调用图形数据库及对 Open GVS中通道、场景、光照、相机等资源的编程 ,建立了模拟真实环境的虚拟道路试验场。研究表明 ,用 Open GVS SDK软件建立的虚拟试验场环境逼真 ,拟实效果好。在用鼠标、键盘等外部输入工具进行场景控制时 ,响应快、实时性好。该技术与虚拟样机技术相结合 。
基金Project(50490274) supported by the National Natural Science Foundation of China
文摘By the aid of the international mining software SURPAC, a geologic database for a multi-metal mine was established, 3D models of the surface, geologic fault, ore body, cavity and the underground openings were built, and the volume of the cavity of the mine based on the cavity 3D model was calculated. In order to compute the reserves, a grade block model was built and each metal element grade was estimated using Ordinary Kriging. Then, the reserve of each metal element and every sublevel of the mine was worked out. Finally, the calculated result of each metal reserve to its actual prospecting reserve was compared, and the results show that they are all almost equal to each other. The absolute errors of Sn, Pb, and Zn reserves are only 1.45%, 1.59% and 1.62%, respectively. Obviously, the built models are reliable and the calculated results of reserves are correct. They can be used to assist the geologic and mining engineers of the mine to do research work of reserves estimation, mining design, plan making and so on.
