摘要
深部矿产地质调查以解析深部地质结构、寻找深部隐伏矿、半隐伏矿和难识别矿为主要目标。根据深部矿产地质调查工作的特点,提出一套基于数据库、3S、三维建模、三维可视化等技术,并适用于矿集区的三维地质建模技术方法。该技术方法以较全面的地质调查资料为基础,以成矿系统理论为指导,利用多元数据平行剖面建模法,以研究区"含矿地质体"及其空间展布特征为目标,分级构建"矿集区—矿田—矿床"模型并耦合,实现矿集区2 000m以浅三维成矿系统结构"透明化"展示。多元数据三维地质模型可为验证成矿模式、提取示矿信息、构建找矿模型及三维找矿预测等提供信息支撑,该建模技术已在铜陵矿集区实践验证并取得良好效果,可为其他地区开展类似工作提供借鉴。
Deep mineral and geological survey focuses on studying deep geological structure and searching for deep concealed or semi-concealed ores and the mines which are difficult to identify.Combined with the characteristics of deep mineral investigation,a 3D geological modeling technique,which is also suitable for modeling of ore cluster areas,is proposed in the paper based on database,3S,3D modeling,and 3D visualization technology.According to the full-scale geological survey data and the metallogenic system theory,this method developed a model which combines ore cluster area,ore field and deposits together using multiple data parallel sections modeling.This model couples with ore-bearing geological bodies and their spatial distribution in the study area,realizing the"transparent"manifestation of the shallow 3D metallogenic system structure in the ore cluster area with a depth of 2 000 meters.The 3D modeling technique can provide an important support for verifying metallogenic model,extracting ore-forming data and constructing 3D exploration prediction.The technique has been verified and achieved good results in Tongling,thus providing reference for prospecting the deposits of the same kind in other areas.