三维矿产资源潜力评价中GIS空间分析的应用研究

Application study of GIS spatial analysis in three dimensional potential assessments of mineral resources

三维矿产资源潜力评价是近年来随着三维地学建模技术的发展而提出的,为大比例尺矿产预测、危机矿山中深部找矿提供了新的思路和技术手段,而三维空间分析则是在三维地学模型基础上的进一步分析和应用。介绍了三维矿产资源潜力评价的概念、流程以及目前常用的GIS空间分析手段。针对三维矿产资源潜力评价,分别从成矿分析、控矿信息提取、控矿信息综合和评价结果分析4个方面阐述三维查询分析、三维缓冲分析和三维叠加分析等不同三维空间分析手段的应用。通过安庆铜铁矿实例,展示了该矿床三维矿产资源潜力评价中GIS空间分析的应用。

Three dimensional potential assessment for mineral resources was put forward as a consequence of the development of three dimensional geological modeling technology, which provided a new way and a new kind of technique for large scaled mineral resources prediction and the exploration of crisis mines. Moreover, the three dimensional spatial analysis was a further analysis and application based on three dimensional geological models. The concept and the workilow of the three dimensional mineral resources potential as- sessment were first introduced in the text. Then, the popular methods of the three dimensional GIS spatial analysis composed of three dimensional query analysis, three dimensional buffer analysis, three dimensional overlay analysis. Furthermore, the applications of these methods were shown in four aspects, including the analysis of ore, ore-forming information extraction and integration of ore-con- trol information and results evaluation. Finally, an application of three dimensional GIS spatial analysis for mineral resources potential assessment was conducted by a case study of Anqing copper and iron mine.