基于三维地球化学勘探的金矿床深部结构推断三维模型构建

Construction of 3D model for deep structure inference of gold deposits based on 3D geochemical exploration

使用人工建立的推断模型难以定量描述蚀变带深部特征,影响推断准确性,为了解决该问题,提出了基于三维地球化学勘探的金矿床深部结构推断三维模型构建。以表面法向量为参量分析三维地球化学勘探原理,根据三维地球化学异常与深部蚀变带在空间分布关系,模拟蚀变分带特征,分析强蚀变单元与非强蚀变单元正相关关系,并确定每个剖面上蚀变带外轮廓,由此构建金矿床深部结构推断三维模型,有效提升推断准确性。

It is difficult to quantitatively describe the deep characteristics of alteration zone by artificial inference model,which affects the accuracy of inference.In order to solve this problem,a 3D model for deep structure inference of gold deposits based on 3D geochemical exploration is proposed.The surface normal vector is used as a parameter to analyze the principle of three-dimensional geochemical exploration.According to the spatial distribution relationship between three-dimensional geochemical anomaly and deep alteration zone,the characteristics of alteration zoning are simulated,and the positive correlation between strong alteration unit and non strong alteration unit is analyzed,and the outer contour of alteration zone on each section is determined.Thus,a three-dimensional model for inferring the deep structure of gold deposit is constructed,which effectively improves the accuracy of inference Sex.