基于GIS的矿产预测地质解译空间信息集成

利用我国海量地质标准基础数据库中的数字地质图和矿产图，通过基于GIS的地质解译空间集成地质信息，将其用于综合信息矿产预测。以地质解译系统对内蒙大兴安岭南段1∶20万成矿预测的应用为案例，阐述地质信息的空间提取与集成过程：首先在建立地质字典库实现地质空间信息共享的基础上，通过矿化密集区对地质模型的分类图层进行空间分析，建立地质成矿空间信息库和图库；然后，基于典型矿床圈定模型单元，通过模型单元与地质成矿空间信息库和图库的空间分析，建立地质找矿模型；最后，基于地质单元对地质成矿空间信息库和图库的二次空间集成，完成预测模型的地质空间信息提取与集成。将本方法应用在银矿案例的综合信息矿产预测靶区评价上，得到可供进一步查证的新增靶区比已知靶区增加了近5倍。

Integrate of Geological Interpretation Spatial Information of Mineral Resource Prediction Based on GIS

According to our massive digital geological map and mineral map in geological standards-based database,geological information is integrated in space by GIS-based geological interpretation.It’s utilized to implement comprehensive information mineral forecast.In this paper,a geological interpretation system is applied to 1∶20 0000 mineralization prediction about Daxinganling,in the southern of Inner Mongolia.In this work,the spatial geological information extraction and integration process can be illuminated.The geological spatial information is shared by establishing geological dictionary.First,geological ore-forming space information base and gallery space are established through making spatial analysis of classification layers of the geological model in the mineralization dense area.Then,the geological prospecting model is established through making spatial analysis about geological model unit and ore-forming spatial information database and gallery space.At last,extraction and integration of the geospatial information of prediction model are completed through the second space integration of the geological model unit to the geological ore-forming spatial information database and gallery space.The amount of new target areas which should be confirmed further is increased 5 times by using this approach to evaluate target areas of comprehensive information mineral forecast of a case of Ag mineral.