基于高密度电阻率法在三维矿体中的应用研究

Research on the application of high-density resistivity method in three-dimensional ore bodies

矿山开采的前期勘察中须查明矿区的风化壳的厚度,并了解矿区可开采的整体厚度展布情况,传统揭露矿山矿体方法主要以钻探揭露为主,但钻探只对单点地层信息提供了有效的地质信息,缺乏对整个矿区矿体厚度及风化壳的宏观了解。本文主要在矿区范围内布置高网格的高密度电阻率法测线,用于揭露风化壳和新鲜基岩面的分界线,结合钻孔信息,进一步的修正风化壳的与基岩的分界面,基于这一基岩的矿体厚度取得地球物理场参数值,并通过sufer10.0软件建立矿体厚度的空间三维模型。

It is necessary to find out the thickness of the weathering crust in the mining area and understand the overall distribution of the recoverable thickness in the mining area during the preliminary investigation of mining.The traditional method of exposing the ore body is mainly drilling,but drilling only provides effective geological information for the single point formation information,and lacks the macro understanding of the thickness of the entire mining area and the weathering crust.In this paper,high grid high density resistivity survey line is mainly laid within the mining area to expose the boundary line between weathering crust and fresh bedrock.Combined with borehole information,the boundary between weathering crust and bedrock is further modified.Based on the ore body thickness of this bedrock,geophysical field parameter values are obtained.