Research On 3D Geological Modeling And Resource Estimation Of Gold Mine

In recent years,with the continuous growth of China’s population and rapid socioeconomic development,energy demand and consumption is increasing,so mineral resources are facing a severe situation of imbalance between supply and demand.Using digital and information-based methods to model deep 3D geology and carry out a 3D digital display of deep geological bodies is conducive to understanding the spatial distribution characteristics of each geological body,providing assistance for deep prospecting work,and also conducive to the information management of mines,while improving the utilization rate of mineral resources,and alleviating the resource crisis.This paper takes the Sanshandao metallogenic belt in Laizhou,Yantai City as the research object,collects and collates relevant geological data,establishes a comprehensive geological database,conducts deep 3D geological modeling,and completes the estimation of ore body resources.The main research work and achievements are as follows:(1)First of all,491 pieces of hole information,6346 pieces of survey results,6550 pieces of lithology data,63,089 pieces of laboratory data,61,705 pieces of apparent resistivity data,and 1,803 pieces of element anomaly sample points were collected and arranged.Then,using Surpac software as a platform,the comprehensive geological database of Sanshandao metallogenetic belt was created,and the three-dimensional visualization of borehole geological data was realized.(2)The principle,method and process of solid modeling were analyzed.Combined with the geological characteristics of Sanshandao metallogenic belt and referring to the relevant geological data in the study area,six geological models of surface,fault structure,alteration zone,ore body entity,geophysical and geochemical were constructed respectively,and the deep three-dimensional comprehensive geological modeling was carried out.(3)The comprehensive analysis of geology-geophysics and geology-geochemistry was carried out to complete the superposition display of 3D geological information.The deep trend speculation of fracture structure is realized,and the best model of mineralization is constructed,and a mineralization prediction area is circled.(4)Based on the constraint of the ore body solid model,the ore body block model was created.Then,the sample data are combined and analyzed statistically,and the estimation of mineral resources is completed by the distance power inverse ratio method.The reliability of the estimate is verified by comparing the estimation results with the estimates of geological block segments.By modeling deep three-dimensional geological body,the visual display of the space of each geological body is helpful to understand the deep geological law and to help the mineralization prediction and prospecting work in the whole research area.And it is of great significance to the rational exploitation and utilization of mineral resources in the Sanshandao mineralization belt.