【作者】 毛先成；

【导师】 戴塔根；

【作者基本信息】 中南大学 ， 国土资源信息工程， 2006， 博士

【摘要】 危机矿山可接替资源找矿已成为中国经济持续快速协调发展的矿产资源保障的战略措施，是当前矿产资源预测评价与找矿的热点和前缘问题。危机矿山可接替资源评价与找矿具有矿山勘探开发程度高、地质勘探与矿山生产原始资料积累充分、评价与找矿向深边部三度空间发展的特点，其要求建立适应于危机矿山深边部及外围找矿的找矿创新体系与评价新理论、新技术和新方法。 本文针对危机矿山可接替资源的评价和找矿问题，以大厂锡多金属矿床为实验平台，深入地研究了矿床三维数字化建模描述和隐伏矿体立体定量预测的基本理论和实践方法。本研究在总结和吸纳现有矿产资源定量评价、三维地学建模、三维GIS等现代技术与方法的基础上，通过大厂锡多金属矿和锡铁山铅锌矿多年积累的地质勘探等原始资料的收集，建立和开发了符合数据中心模式的地质矿产中央资源数据库和数据库管理系统，探索性地提出面向矿床客观描述的三维数字矿床理论，研究和实现了数字矿床的空间数据模型与空间数据库、地质体几何模型与离散模型、地质场数字化建模与控矿作用空间分析，产生了适应于危机矿山可接替资源找矿特点的隐伏矿体立体定量预测的理论与方法。 系统全面地收集了大厂锡多金属矿和锡铁山铅锌矿多年来积累的找矿勘探和生产勘探等地质矿产资料，进行了原始资料的分类、抽象、编码、数字化和基于关系模型的数据库设计，开发了地质矿产中央资源数据库管理系统，建立了适于数字矿床建模的矿床基础数据库。 从矿床勘探及矿床描述角度出发，通过矿床地质空间概念及其表达框架和认知框架的研究，提出了与现实矿床相对应的数字矿床(虚拟矿床)概念，研究和构造了数字矿床的空间数据模型即矿床地质空间对象模型，得到了基于矿床地质空间到地质对象的空间域和对象域分解的数字矿床对象树，确立了数字矿床及其地质对象的体素模型及线性八叉树模型表达和空间数据库存储的理论与方法。 针对地质对象及其原始数据的特点，讨论了不同类型地质对象的建模理论与方法，得到了基于曲面表示的地质体几何模型。为实现地质对象统一的离散化表达，从地质体的面模型出发，探讨了矿床地质更多还原

【Abstract】 The prospecting for replaceable resource of crisis mines has become a strategic measure of mineral resource’s guaranteeing the sustainable, rapid and harmonic development of China economy, and then a hotspot and frontier issue of prognosis, appraisal and prospecting for mineral resource. When carrying out the appraisal and prospecting for replaceable resource of crisis mines, we will have to cope with the situations of high-level mine exploration and exploitation, enormous accumulated raw data of geological exploration and mine exploitation, and mineral prospecting advancing on the third dimension of space, i.e. the depth and margin of the mine, which leads to the demand for establishing prospecting innovative systems and novel theories, techniques and methods of mineral resource appraisal suited for the prospecting in the depth, margin and outside of crisis mine.Focusing on the issue of assessing and prospecting replaceable resource of crisis mines, the author has dived into the research on the basic theories and implementing methods of the 3D digital modeling and characterization of mineral deposit and the stereo quantitative prediction of concealed ore body by taking Dachang tin polymetallic ore deposit as the experimental platform. This research assimilates modern theories and methods of quantitative appraisal of mineral resources, 3D geoscience modeling, 3D GIS, etc. Following the data-center construction model, the central database for geology and mineral resource is devised and the management system is developed with the geological exploration raw data of Dachang tin polymetallic mine and Xitieshan Pb-Zn mine. This paper proposes and explores the theory of 3D digital deposit oriented to the objective characterization of mineral deposit, studies and implements the spatial data model and spatial database of digital deposit, the geometric and discrete models of geological body, the digital modeling of geological field and the spatial analysis of geological ore-controlling factors. And then, the stereo quantitative prediction theory and method of concealed ore body suited for prospecting replaceable resource of crisis mine is set up.更多还原