高精度磁测勘查天宝山铅锌矿的应用研究

发布时间：2018-02-28 05:23

本文关键词： 高精度磁测铅锌矿 θ图磁异常处理换算　出处：《成都理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：磁法勘探是地球物理勘探中最古老的方法之一,一直沿用至今,在寻找铁磁性矿产和研究深部地质构造有着丰富的经验,但在寻找非磁性矿产中应用较少,缺乏一定的实际经验。本文利用高精度磁测间接地寻找铅锌矿,探寻磁法间接找矿的规律。天宝山铅锌矿处于上扬子地台西南缘康滇地轴以东的川滇黔铅锌矿成矿带上,是我国重要的铅锌矿基地之一。矿区经过了几十年的开采,铅锌矿可开采的剩余储量已经不多,为此,收集前人的研究成果和资料,分析该区域的地质构造、矿床基本特征以及矿区构造特征、构造演化与成矿、构造控矿等几方面特征,得出天宝山铅锌矿床属热液矿床,采集矿区和测区的岩(矿)石标本,测定其磁性参数,得出了磁法间接找矿的可行性,在此基础上,利用高精度磁测方法在已开采矿区外围展开寻找新的铅锌矿工作。本文首先针对天宝山地区的实测磁测资料,选用位场的数据处理方法,对磁测数据进行圆滑、化极、延拓、解析信号、导数换算等方法进行磁异常处理换算,以便更好地突出目标体的信息,压制干扰信息以及圈定可能与铅锌矿相关的异常体。用边界识别-?图法来圈定磁异常的边界。再利用统计假设检验分区法来推断研究区域的断裂、蚀变带等。最后,结合实际地质勘察和化探异常划分的优选靶区对天宝山铅锌矿外围地区进行了矿产预测,推断出了T1、T2、T3和T4四个可能的成矿赋矿区。
[Abstract]:Magnetic exploration is one of the oldest methods in geophysical exploration, still in use, in search of ferromagnetic minerals and Research on deep geological structure has a wealth of experience, but in the search for non magnetic mineral is used less, the lack of practical experiences. This paper uses the high precision magnetic indirectly for lead-zinc mine, indirect rule to explore the magnetic prospecting method. The Tianbaoshan Pb Zn deposit in Sichuan Yunnan Guizhou on the southwestern margin of the Yangtze Platform in Kangdian area east of lead-zinc metallogenic belt, is one of the important bases of the lead-zinc mine in China. Mine after decades of mining, the remaining recoverable reserves of the lead-zinc mine has not, therefore, from the former the research results and data analysis, the geological structure of the region, the basic characteristics of the deposit and tectonic characteristics, tectonic evolution and mineralization, ore controlling structure and other aspects of characteristics, the Tianbaoshan Pb Zn deposit belongs to hydrothermal deposit mining In the mining area and test area of rock (ore) stone specimens to determine the magnetic parameters, the feasibility of indirect prospecting magnetic method, on the basis of this, using the method of high precision magnetic survey in mining area periphery search new lead-zinc mine. This paper aimed at the Tianbaoshan area measured by magnetic data. A data processing method, is smooth, on the magnetic data of the pole, continuation, analytic signal, derivative conversion methods such as magnetic anomaly processing and conversion, in order to better highlight the target information, jamming and delineation of information may be associated with lead-zinc anomaly. With the boundary recognition method to delineate the map? The magnetic anomaly boundary. Then to infer the fracture study area by using statistical hypothesis test partition method, alteration zone and so on. Finally, target selection and combined with the actual geological survey and geochemical anomaly classification of the mineral of the Tianbaoshan Pb Zn mine periphery It is predicted that four possible ore-forming areas of T1, T2, T3 and T4 have been deduced.

【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.2;P618.4

【参考文献】