Study On Spatial Data Model Of Regional Mineralization

With the rapid development of computer and network hardware,modern space information technology in the 21 st century into a completely new state.Based on the spatial data model of the regional metallogeny,the multi-view spatial model and the generation and expression model of the data based on the spatial database are established.The logic of the theoretical research,the logicalization of the spatial data model,Structured "to be used as a core support condition for research,while optimizing the research results,providing the basis for the establishment of spatial database.At the beginning of the study,a spatial database of 1: 250,000 geologic data and geochemical data was established under the ArcGIS platform.The database contains two levels: logical model and physical model.The main points include four aspects:(1)feature class and object class(2)the theoretical research results to limit the contents of the object class and the relationship class;(3)the elements of class to maintain objective concise,object class and relationship class embodied subjective open;(4)layer to the elements Class and object class content for multi-perspective expression.Based on the characteristics of mineral resources in the study area,this paper chooses the sandstone type copper deposit model as a typical deposit model study.By summarizing the sandstone type copper deposit description model in the study area,the relevant information in the spatial database is extracted and the relevant model The spatial distribution of the obtained data is carried out according to the correlation of the ore-forming elements.Finally,the metallogenic areas will be divided into 1: 1.4-1.8,corresponding to the area that is not conducive to the mineralization of this type,1.8-3.0 for the III-level mineralization area,3.0-4.2 for the II-level mineralization area,4.2-5 for the I-level mineralization area.