【作者】 李楠；

【导师】 吴信才；

【作者基本信息】 中国地质大学（北京） ， 地图制图学与地理信息工程， 2011， 博士

【摘要】 在充分研究区域矿产资源GIS评价原理与方法流程的基础上,总结归纳开发矿产资源GIS评价系统所需的关键算法。在深入研究上述关键算法和MAPGIS数据中心中间件开发和应用技术的基础上,设计并实现区域矿产资源GIS评价系统软件工具的相关功能插件,为全国矿产资源潜力评价项目服务。在矿产资源评价实际工作中,主要面临预测要素信息提取与综合,多元信息表达,找矿信息立体化等问题,而这一点恰好可以用GIS技术解决。其中空间分析和空间索引技术可以解决信息提取与综合问题,等值线图的自动绘制可以实现地球物理、地球化学等多元预测信息的表达。同时,三维可视化技术可以将地质专家大脑中的地质模型转化为预测模型,并使之具象化、可视化。本篇论文在现有区域成矿预测理论研究和区域矿产资源GIS评价系统软件需求分析的基础上,主要开展以下几个关键算法的研究和开发工作:⑴研究空间分析与二维空间索引技术,预测要素提取与综合相关关键算法的改进;⑵分析区域矿产资源GIS评价系统软件多元信息表达技术,实现各种等值线图件的自动绘制功能;⑶在现有区域矿产资源GIS评价工作流程的基础上,提出将计算机地貌晕渲技术应用到区域矿产资源GIS评价软件处理流程中,提供三维环境下,矿产资源预测评价原型系统;⑷软件应用测试。应用区域矿产资源GIS评价软件,对东天山铜镍硫化物矿床开展定位预测研究。更多还原

【Abstract】 Based on the full research of method model of Mineral Resources Assessment, this paper summarizes the kernel algorithms during developing and programming software of Mineral Resources Assessment on basis of Geographical Information System (GIS). Based on the research of the kernel technologies and kits of MAPGIS, the author and his colleagues developed and programmed Mineral Resources Assessment System (MARS). It has been applied in National Mineral Resources Assessment Project.In the whole procedure of Mineral Resources Assessment, there are two important problems of multi-feature information extraction and results presentation. Exactly, GIS has an advantage on these issues. Specifically, Spatial Analysis and Spatial Index of GIS can deal with Multi-feature information extraction and Integration; auto-creating contour map provides result visualization expression. In addition, with the maturity of three-dimension (3D) visualization technology, the paper presents a method that it has applied 3D visualization technology to improve MRAS’effects of visualization.Based on the theory of Regional Mineral Resource Assessment and analysis requirements of MRAS, the paper carries out researches in the following areas:⑴.Based on research of technologies of Spatial Index and Spatial Analysis in GIS, the paper improves Point-In-Polygon query algorithm on basis of BSP tree.⑵.Based on technologies of automatic drawing map in GIS, the paper emphasizes an algorithm for contour tracing in irregular and complicated areas.⑶.Present an improved MRAS software processing. The processing applies Hillshade technology to improve visualization effect of software.⑷.Apply improved MRAS software to carry out qualitative prediction of copper and nickel deposits in East Tianshan area, Xinjiang Autonomous Region.更多还原