| Shangzhou-Danfeng-Shangnan area in Shanxi province is located in southeast of Qilian-Qinling orogen uranium mineralization area.Also,it is the main target zone of granite pegmatite type uranium ore deposit in China.This paper takes Guangshigou uranium deposit of Shangzhou-Danfeng-Shangnan area in Shanxi as the main object of study,with the aid of international mainstream software Envi,Mopas,Micromine,and with GIS software such as Arcgis,Mapgis as auxiliary for drawing a map,it completes two-dimensional metallogenic prediction and three-dimensional modeling of uranium orebody and rock mass,and estimate resources and reserves based on the three-dimensional grade model,generate reserve report,achieved the following results and understanding:1 With the help of Mopas software and the ETM+ data for hydroxy and iron alteration anomaly,combined with regional geology and mineral information,this paper uses the GIS technology and the dynamic clustering method for metallogenic prognosis of uranium resources in the study area,and it prospects the favorable target area.2 With the international mainstream mining software Micromine as a platform,this paper constructs geology and mineral information database on the basis of exploration rules,it also establishes the three-dimensional model of ore body,rock mass and the earth's surface in Guangshigou uranium deposit of Shanxi province.3 This paper preprocesses the extra high grade drilling data and sample combination in research area,and factionizes the three-dimensional model of ore body in the space,then constructs an empty block model for valuation.4 According to the experimental variation function,this paper calculates the experimental variation function of orebody in research area,ordinary kriging method,multiple indicator kriging method and distance power inverse ratio method are adapted to estimate resource reserve. |
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