基于統(tǒng)計(jì)分析法的羅河鐵礦床儲量估算研究
[Abstract]:The estimation of the reserves of mineral resources plays a very important role in all stages of the survey, investigation, exploration and mine design and mining. It can be said that the estimation of resource reserves runs through the whole life cycle of the mine. At present, with the rapid development of the three dimensional visualization in the field of geology, the 3D geological modeling technology is used. The method of statistical analysis is more accurate to describe the shape of ore body and the distribution characteristics of elements, and the estimation of the three dimensional reserves of mineral resources has become a hot spot of research. The statistical analysis method contains a variety of estimation methods and models, and the different methods have different characteristics and results. Number is an important tool for statistical analysis of reserves estimation methods, which can be used to quantify the spatial variability of elements. The related parameters of the variation function have an important influence on the results of reserves estimation, but the related research is relatively weak. Therefore, this paper takes the Luohe iron deposit in the Lujiang Fong basin as an example, and studies the correlation of variation function in detail. The effect of parameters on the results of reserves estimation, and further comparative study of the estimation results and influencing factors of a variety of three dimensional statistical analysis of reserves estimation methods. Through the analysis of the spatial variation structure and variation function of the three iron orebodies of Luohe iron deposit, the following conclusions are obtained: (1) the variation function is easily subject to the lag distance, the data distribution and the data distribution The common influence of the block gold value: (1) the increase of the lag distance will increase the stability of the variation function, but will cover up the microvariation information; (2) after the normal transformation, it is easier to obtain the stable curve of the experimental variation function, which is beneficial to the fitting of the theoretical variation function; (3) the increase of the value of the block gold will enlarge the range of the influence of the known data, and increase the range of the known data. The known data structure that participates in the estimation, reduces the estimated variance and reduces the true variation of the data. (2) compared with the other three dimensional statistical analysis of reserves estimation methods, the three dimensional log Kriging method is used to estimate the reserves of the ropeieric ore deposit, and the variation function is the most robust, and the estimated Kriging variance is the least, and is relatively better. The accuracy and results of reserves estimation.
【學(xué)位授予單位】:合肥工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:P624.7;P618.31
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