| Solid mineral exploration is conducted to explore the solid materials in mineral resources,which targeted for geological survey and research of mineral resources.The grade distribution characteristics of ore deposits are the most important attribute of the mineral resources.It has great significance to study the grade distribution characteristics of the mineral resources for estimating the reserves and understanding the present situation of mineral resources as well as mastering their overall features.The molybdenum ore body in CLK mine lot in Daxingan Mountains is characterized by a large distributions area and a long ore body with great thickness,depth and complex changes in grade.Therefore,it is difficult to evaluate it in a scientific and accurate way using the traditional methods for research on grade distribution.By taking the variation in grade of Mo elements of the ore body as the research object,this paper makes deep understanding and analysis on the geology background,engineering layout,and basic shapes of ore bodies in the CLK mine lot.This paper carries out analysis on the relationship between the research data through the analysis of quality related data,constructs the geological database of the ore bodies by using the software of Surpac,to conduct the length statistical analysis and combination of the samples and basic statistical analysis of Mo element grade,and then obtains the theoretical model of variation functions by applying the geostatistics method,using the spherical model and combining the structures of variation functions.On this basis,with the establishment of the ore body model and block model,this paper establishes the grade model of the spatial distribution of Mo elements using ordinary Kriging method with spatial interpolation.The results show that the established model is reliable and calculates accurately,so it can be used to assist the geological and mining engineering for resource assessment,mining design and plan preparation,etc. |
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