地质找矿中相关系数的等效性比较及应用
发布时间：2018-10-15 12:05
【摘要】：在矿体定位预测方面,利用相关系数的方法,似定量、定量地建立找矿模型在业内一直久攻未克,而这个难题的根源就在于无法实现不同自由度下相关系数的等效性比较。为解决这一难题,服务建模,指导找矿,在统计学的基础上,将相关系数临界值换算成F分布分位数,利用F分布分位数计算出等效指数(存真概率),通过等效指数和假定的统一自由度反算出等效的F分布分位数,再转化为等效相关系数,最终实现了不同自由度相关系数的统一自由度的转换。为了尝试等效相关系数的实用性,以河南省西峡县蒲塘金矿某矿体为例,对转换结果在找矿建模中的应用进行了检验,效果良好,由此证明,利用不同自由度下的简单相关系数,通过统一自由度转换求取等效相关系数的方法是合理的;利用等效相关系数和矿体标高回归建立矿体深度模型的方法是可行的。
[Abstract]:In the field of orebody location and prediction, using the method of correlation coefficient, it seems to be quantitative, quantitative and quantitative to establish the prospecting model in the industry for a long time, but the root of this problem lies in the inability to achieve the equivalence comparison of correlation coefficients under different degrees of freedom. In order to solve this problem, service modeling, guiding prospecting, on the basis of statistics, the critical value of correlation coefficient is converted to F distribution quantile. The equivalent exponent (true probability) is calculated by using the quantile of F distribution, the equivalent quantile of F distribution is calculated by the equivalent exponent and the assumed unified degree of freedom, and then the equivalent correlation coefficient is transformed into the equivalent correlation coefficient. Finally, the unified degree of freedom conversion of different degrees of freedom correlation coefficient is realized. In order to try the practicability of equivalent correlation coefficient, taking a ore body in Putang Gold Mine, Xixia County, Henan Province as an example, the application of conversion results in ore prospecting modeling is tested. It is reasonable to use the simple correlation coefficient under different degrees of freedom to obtain the equivalent correlation coefficient through the unified degree of freedom conversion, and it is feasible to establish the orebody depth model by using the equivalent correlation coefficient and the orebody elevation regression.
【作者单位】： 河南省地质矿产勘查开发局第一地质勘查院;河南省地质矿产勘查开发局第三地质矿产调查院;
【分类号】：P624
本文编号：2272501
[Abstract]:In the field of orebody location and prediction, using the method of correlation coefficient, it seems to be quantitative, quantitative and quantitative to establish the prospecting model in the industry for a long time, but the root of this problem lies in the inability to achieve the equivalence comparison of correlation coefficients under different degrees of freedom. In order to solve this problem, service modeling, guiding prospecting, on the basis of statistics, the critical value of correlation coefficient is converted to F distribution quantile. The equivalent exponent (true probability) is calculated by using the quantile of F distribution, the equivalent quantile of F distribution is calculated by the equivalent exponent and the assumed unified degree of freedom, and then the equivalent correlation coefficient is transformed into the equivalent correlation coefficient. Finally, the unified degree of freedom conversion of different degrees of freedom correlation coefficient is realized. In order to try the practicability of equivalent correlation coefficient, taking a ore body in Putang Gold Mine, Xixia County, Henan Province as an example, the application of conversion results in ore prospecting modeling is tested. It is reasonable to use the simple correlation coefficient under different degrees of freedom to obtain the equivalent correlation coefficient through the unified degree of freedom conversion, and it is feasible to establish the orebody depth model by using the equivalent correlation coefficient and the orebody elevation regression.
【作者单位】： 河南省地质矿产勘查开发局第一地质勘查院;河南省地质矿产勘查开发局第三地质矿产调查院;
【分类号】：P624
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