Research On Three-dimensional Modeling Of The Orebody And Distribution Rules Of Ore Bodies In The Deposit Of Au In Dayingezhuang

ABSTRACT:With the development of three-dimensional modeling technology and the growing need for mining industry, people are increasingly using3D visualization software for three-dimensional modeling of mining geological body. Three-dimensional modeling can vividly show the distribution and spatial shape of the ore body, geological features strike, dip,etc.,thus it can facilitate geology staff to obtain a deeper understanding of the three-dimensional image. On the basis of three-dimensional modeling of the ore body, the structure of the spatial variation of ore body is analyzed by geostatistical method and grade morphological changes in the distribution of display of ore and gold are obtained, thus ore grade estimation and resource calculations are carried out. Finally, different kinds of mineralization indicators are calculated and combined, based on the combined mineralization indicators, mineralization projections are manufactured and then the distribution of the mineralization are summarized.In this paper, combined with research projects, several aspects research of methods and techniques are studied in the deposit of Au in Dayingezhuang, including the following aspects(1) Geological data digitization. Geological data consists of geological prospecting line profile, middle geology plan, geologic column, drilling and sampling data, and a variety of maps, reports and forms. Different data types are extracted by using different software design and methods. After that, a series of methods are designed for its inspection and integration, eventually the geological database are formed.(2)Methods and processes of the three-dimensional orebody modeling are studied. According to the actual situation in the deposit of Au in Dayingezhuang, a comprehensive three-dimensional solid model of the ore body is established combining with geological prospecting line profile and middle geology plan. (3) Based on geostatistics, the structural of the spatial variation of Au grade of①and②orebodies are analysised, and then Au grade of①and②orebodies are estimated by ordinary kriging and inverse distance weighting methods, and then the estimation results will be giving a three-dimensional visualization.(4) On the basis of result of ore resource estimate, the indicators of mineralization are calculated and merged combining with sample spatial positioning data and drilling trajectory data.The indicators of mineralization are calculated in three planes of projection of three-dimensional space,then the spatial distribution of mineralization will be obtained and summarized.