Research On 3D Digital Deposit And Stereo Quantitative Prediction Of Concealed Ore Body

The prospecting for replaceable resource of crisis mines has become a strategic measure of mineral resource's guaranteeing the sustainable, rapid and harmonic development of China economy, and then a hotspot and frontier issue of prognosis, appraisal and prospecting for mineral resource. When carrying out the appraisal and prospecting for replaceable resource of crisis mines, we will have to cope with the situations of high-level mine exploration and exploitation, enormous accumulated raw data of geological exploration and mine exploitation, and mineral prospecting advancing on the third dimension of space, i.e. the depth and margin of the mine, which leads to the demand for establishing prospecting innovative systems and novel theories, techniques and methods of mineral resource appraisal suited for the prospecting in the depth, margin and outside of crisis mine.Focusing on the issue of assessing and prospecting replaceable resource of crisis mines, the author has dived into the research on the basic theories and implementing methods of the 3D digital modeling and characterization of mineral deposit and the stereo quantitative prediction of concealed ore body by taking Dachang tin polymetallic ore deposit as the experimental platform. This research assimilates modern theories and methods of quantitative appraisal of mineral resources, 3D geoscience modeling, 3D GIS, etc. Following the data-center construction model, the central database for geology and mineral resource is devised and the management system is developed with the geological exploration raw data of Dachang tin polymetallic mine and Xitieshan Pb-Zn mine. This paper proposes and explores the theory of 3D digital deposit oriented to the objective characterization of mineral deposit, studies and implements the spatial data model and spatial database of digital deposit, the geometric and discrete models of geological body, the digital modeling of geological field and the spatial analysis of geological ore-controlling factors. And then, the stereo quantitative prediction theory and method of concealed ore body suited for prospecting replaceable resource of crisis mine is set up.