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本文选取安徽石台县丁香地区,以铜多金属矿为例,分析该区的地、物、化、遥数据,选择7个预测变量进行成矿定位预测研究。利用客观成矿预测法-信息量法进行计算,得到成矿预测变量所占的信息量,归一化得到变量的客观权重,依据专家知识,获得上述变量的主观权重,随后,采用D-S证据理论将上述主、客观权重进行融合得到综合权重,并采用该综合权重结合专家证据权重法获得单元格的后验概率,制作成矿有利度的分级色阶图。预测结果表明:该法能有效地综合来自主、客观方面的知识,预测结果更加科学、合理。与单纯的信息量法、专家证据权重法相比,取得了更好的成矿预测效果。
In this paper, we select the clover area of Shitai County, Anhui Province. Taking copper polymetallic ore as an example, we analyzed the data of geo-matter, teleconnection and teleconnection in this area, and selected seven predictors to predict the ore-forming location. Using the objective ore-forming prediction method-information method, the information amount of the ore-forming prediction variables is obtained, the objective weight of the variables is obtained through normalization, and the subjective weights of the above variables are obtained according to the expert knowledge. Subsequently, the DS evidence theory The above objective weight and objective weight are combined to obtain the comprehensive weight, and the posterior probability of the cell is obtained by using the comprehensive weight combined with the expert evidence weight method to make the hierarchical color tone diagram of the ore-forming benefit degree. The prediction results show that this method can effectively synthesize the knowledge from the main and the objective aspects, and the prediction result is more scientific and reasonable. Compared with the simple information method and the expert evidence weight method, the ore-forming prediction result is better.