隐伏铜镍矿异常灰色关联滤波圈定法

THE GREY CORRELATIONAL FILTER METHOD FOR DELINEATING ANOMALIES OF CONCEALED COPPER-NICKEL DEPOSITS

在新的铜镍矿异常圈定方法的研究中，我们把灰色系统理论与地质、物探、化探方法相结合，提出了以已知矿床上建立的参考数列系为灰色子波，对研究区的比较数列系进行关联度扫描，从中圈定关联度异常，预测矿床赋存部位的灰色关联滤波法．该方法在新疆哈密研究区作了隐伏铜镍矿床预测试验，在找矿信息的采集中，选取了地质、物探、化探标志１３个．预测实践表明，关联度异常的展布与铜镍矿床的位置相对应．根据研制的方法设计的ＺＫＹ１孔，在离地表１１０～１９０ｍ，钻遇５０多米铜镍矿，证实了该方法适用于大比例尺隐伏矿床预测．

The new research methodology for delineating anomalies of concealed copper-nickel deposits combines the grey system theory with methods in terms of geology, geophysical exploration, and geochemical exploration. In this research, the reference number sequences based on the known mineral deposits are proposed to be grey sub-waves. The correlational scanning covers the number sequences for comparison in the controlled region. In this way, the abnormality in correlation can be determined for forecasting the location of the mineral deposit. This grey correlated filter forecasting of mineral deposits has been applied to and then checked in the forecasting of the concealed copper-nickel deposit in Hami, Xinjiang. The thirteen indicators in terms of geology,geophysical exploration, and geochemical exploration were chosen in the collection of prospecting information in the research region. The forecasting practice shows that the distribution of the correlational anomaly corresponds to the location of the copper-nickel deposit. The research method is used to design the location of hole ZKY 1. When the bit passed along the hole to the depth between 110 and 190 meters below the earth surface, it drilled through more than 50 meters of copper-nickel beds. This practice proved that the method is appropriate for the large-scale forecasting of the concealed mineral deposits.