复杂地质条件下金矿矿体形态分析及建模

发布时间：2018-03-06 20:14

本文选题：微细浸染型金矿　切入点：双频激电法　出处：《贵州大学》2015年硕士论文　论文类型：学位论文

【摘要】：贵州黔西南地区是中国微细浸染型金矿主要分布区之一。然而黔西南地区地质条件异常复杂,金矿矿体成因类型多样、横向变化明显,矿体外延尖灭亦无规律可循。在开发该类型金矿时,由于设计人员对矿体赋存形态不明确,且二维的地质研究图件缺乏三维直观可视性,无法进行合理的采矿设计。导致开采过程中存在效率低、贫化严重、资源浪费等现象。所以,准确把握微细浸染型金矿矿体形态、赋存状态,对金矿床进行高效开发利用是一个难题。本文在前人已有研究成果基础之上,以贵州省安龙县戈塘金矿为研究对象,对其复杂的矿体形态进行分析,并且利用专业矿业工程软件建立了三维地质模型,并以不同资源勘探手段的成果对金矿体三维实体模型进行了补充修正。本文主要研究内容如下:1、收集整理戈塘金矿地质生产报告、储量分布图、地质剖面图、钻孔柱状图等相关地质资料,了解戈塘金矿区域地质背景及矿床地质情况;2、利用3DMine矿业工程软件录入戈塘金矿钻孔信息,建立戈塘金矿钻孔数据库;建立矿区地表模型;利用戈塘金矿地质剖面图及钻孔数据库圈定矿体边界,建立金矿体三维实体模型,F35断层模型;3、在戈塘金矿试验采场投入双频激电法探测工作,投入频率域中梯扫面及频率域对称四极测深工作,依据探测结果圈定矿致异常体;并对在非水平地层上采用不同极距序列(指数模式极距序列、对数模式极距序列)的测深效果进行了对比研究;利用双频激电法探测成果对基于钻孔数据库建立的金矿体三维实体模型进行补充修正,得到较能真实反映矿体形态的金矿体模型;4、分析了三维地质模型在采矿设计、数值模拟方面的应用。利用3DMine矿业工程软件提供的DTM面生成等值线的功能,依据建立的矿体模型分别绘制了矿体顶板等高线图、矿体底板等高线图,针对戈塘金矿二龙口矿段上免浪块段13号矿体进行了开拓设计,采用3DMine—C AD—PHasee2的方式将三维地质建模与数值模拟进行耦合。
[Abstract]:Southwest Guizhou is one of the main distribution areas of micro-disseminated gold deposits in China. However, the geological conditions in southwest Guizhou are very complicated, the genetic types of gold ore bodies are various, and the lateral changes are obvious. In the development of this type of gold deposit, the designers are not clear about the occurrence of the orebody, and the two-dimensional geological research map lacks three-dimensional visual visibility. It is impossible to carry out reasonable mining design, which leads to low efficiency, serious dilution and waste of resources in the mining process. It is a difficult problem to develop and utilize the gold deposit efficiently. Based on the previous research results, this paper analyzes the complex orebody morphology of the gold-ore deposit in Anlong County, Guizhou Province, on the basis of the previous research results, taking the Gotang Gold Mine in Anlong County, Guizhou Province as the research object. And using professional mining engineering software to establish a three-dimensional geological model, In this paper, the main contents of this paper are as follows: 1. The geological production report, reserve distribution map, geological profile map of Gotang gold deposit are collected and collated. In order to understand the regional geological background and geological conditions of Getang gold deposit, the borehole information of Gotang gold deposit is inputted by 3DMine mining engineering software, the borehole database of Gotang gold deposit is established, and the surface model of mining area is established. By using geological profile and borehole database to delineate the boundary of orebody, a 3D solid model of gold body, F35 fault model, is established, and the dual frequency induced electric method is applied in the test stope of Gotang gold mine. In frequency domain and frequency domain symmetrical quadrupole sounding work is put into operation to delineate ore induced anomalies according to the detection results, and different polar distance sequences (exponential mode polar distance series) are used in non-horizontal strata. The bathymetric effect of logarithmic mode polar series) is compared and studied, and the 3D solid model of gold ore body based on borehole database is modified by using the results of double frequency IP method. A gold orebody model is obtained, which can truly reflect the shape of orebody. The application of 3D geological model in mining design and numerical simulation is analyzed. The function of generating isoline from DTM plane provided by 3D Mine mining engineering software is used. According to the established orebody model, the contour line map of roof and floor of orebody is drawn, and the No. 13 orebody of Shangfanglang block in Erlongkou section of Gotang gold mine is developed and designed. 3D geological modeling and numerical simulation are coupled by using 3D Mine-C AD-PHasee2.
【学位授予单位】：贵州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD163.2

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