3D Geological Modelling And Spatial Analysis Of Mineralization In Miaoliang Gold Mining Area,Shanyang County,Shaanxi Province

3D geological modeling is a typical example of the combination of computer application technology and industry development,with the social background of the rapid development of computer technology and the expanding application field.The foundation of mine visualization is to construct digital mine visualization of layer,structure,magmatic rock and ore body by using 3D spatial modeling technology.The technology not only can easily realize the geological data storage,management and constantly update,but also can visually and intuitively understand and observe various geological body in the morphological structure and the distribution characteristics of space.In addition,it can be analyzed the geological body of attribute in space,the change rule of characteristics such as ore grade,magmatic rocks mineralization degree.In this paper,based on the exploration geological data of Miaoliang gold mine in each stage,under the condition of systematic survey of the field geological characteristics of the mining area,with 3DMine mining engineering software as a tool to construct the geological database,digital surface model,fault and ore body of Miaoliang gold mine.This thesis builds experimental variogram,using geostatistics study variation function and mutation methods of ellipsoid,at the same time,using the theory of the variation function fitting results.Besides,the author use the ordinary Kriging and Distance Power Inverse ratio ore body entity assignment,analysis of variation anisotropy ellipsoid in all directions and mineralization characteristic space.Finally,the ore block model is built on the basis of the ore body solid model and the ore body grade,at the same time,estimate the resource reserves by using ordinary Kriging method and geological database.The study expounds the construction of database and a variety of models.On the basis ore body of solid model,the article use the experimental variogram and mutation ellipsoid analysis ore body mineralization rule.In the space between the north and the south orebody exist the phenomenon of anisotropic in strike,dip and thickness direction.The northern orebody in the three main direction ratio is 1.66:1:1,southern ore body ratio is 1.15:1:1.The mineralization distribution of the ore body in the north is relatively uniform,with relatively concentrated and obvious characteristics of coordinate change.The experimental variation function of the ore body in the south has obvious sawtooth phenomenon,indicating the occurrence of alternating abundant and less,with certain characteristics of coordinate change,which is a typical performance under the influence of structure.The ore block model and grade model were constructed on the basis of ore solid model and database.