动力三角翼低空磁测资料在多宝山铜矿勘查中的应用研究

发布时间：2018-01-22 20:56

本文关键词： 动力三角翼多宝山地区铜矿位场分离断裂识别　出处：《吉林大学》2017年硕士论文　论文类型：学位论文

【摘要】：近20年来随着物探方法与技术的不断进步,传统的磁法测量工作开始转向高分辨率高精度的航空磁测工作。目前国内主要的低空飞行平台有无人机、飞艇、直升机、动力三角翼等。动力三角翼低空磁测方法具有工作效率高、适应性强、能适当的减少浅部的人文干扰磁源对异常的干扰等特点,在近些年来能够成为一种快速而有效的磁法测量手段。黑龙江多宝山地区属于丘陵地区,地形高低起伏较大,并且处于森林沼泽坡积物覆盖区,岩石露头较少,地面地质与物探任务不易展开。多宝山地区有一定的人文干扰,有多宝山铜矿、铜山铜矿等开采中的矿床,还有多宝山镇、卧都河镇等城镇。因此,地面的磁测工作难以开展。多宝山地区的花岗闪长岩和铁矿化岩石具有较强的磁性,剩磁强度亦较强;中酸性花岗岩及斑岩磁性稍弱;凝灰岩等火山沉积岩具有中弱磁化率;其他岩性地层为弱磁性;石英脉岩基本无磁性。因此,岩矿石间的磁性差异为动力三角翼低空磁测提供了地球物理基础。本文利用2013年至2015年北京地质矿产研究院在黑龙江多宝山地区实测的动力三角翼磁测数据,旨在通过低空磁测数据处理、反演,结合相关物探资料、地质资料等总结出黑龙江多宝山地区成矿带铜矿的磁法找矿模式。具体工作与成果如下:(1)对动力三角翼低空磁测系统进行了介绍,并利用实测低空磁测资料与其它磁测结果进行对比,从而证实动力三角翼低空磁测在一些复杂地形进行工作的优势;(2)简述了常规磁测数据处理方法,建立理论模型验证位场分离方法和边界识别的适用性;(3)对动力三角翼低空磁测资料在黑龙江多宝山地区进行处理,了解磁性基底分布情况;推断出断裂分布范围;确定了磁性地质体边界。(4)通过实测资料解释结果,结合地质图以及相关的物探资料对动力三角翼低空磁测资料在铜矿区的应用分析,总结出利用低空磁测资料寻找铜矿床的找矿模式。
[Abstract]:With the development of geophysical exploration methods and techniques in recent 20 years, the traditional magnetic measurement work began to shift to high-resolution and high-precision aeromagnetic measurement. At present, the main low-altitude flying platforms in China are UAV and airship. Helicopter, power delta wing and so on. The low altitude magnetic measurement method of power delta wing has the characteristics of high working efficiency, strong adaptability, and can appropriately reduce the interference of the shallow humanistic interference magnetic source to the abnormal. In recent years, it can become a rapid and effective means of magnetic measurement. The Dobaoshan area of Heilongjiang belongs to the hilly area, the topography is high and low, and it is in the forested swamp slope cover area, the rock outcrop is less. The task of surface geology and geophysical exploration is not easy to be carried out. There are some humanistic interference in the Dobaoshan area, there are ore deposits in mining such as Dobaoshan Copper Mine, Tongshan Copper Mine, and other towns such as Dobaoshan Town, Huidu River Town and so on. It is difficult to carry out the magnetic measurement on the ground. The granodiorite and iron ore rock in the Dobaoshan area have strong magnetic properties and strong remanent magnetic intensity. The magnetic properties of intermediate-acid granite and porphyry are slightly weak; Volcanic sedimentary rocks such as tuff have moderate and weak magnetic susceptibility; Other lithologic strata are weakly magnetic; Quartz dikes are basically nonmagnetic. The magnetic difference between rocks and ores provides a geophysical basis for low-altitude magnetic measurement of the dynamic delta wing. The dynamic delta wing measured by the Beijing Institute of Geology and Mineral Resources from 2013 to 2015 in the Dobaoshan area of Heilongjiang Province is used in this paper. Magnetic data. The purpose of this paper is to process and retrieve the low-altitude magnetic data and combine the relevant geophysical data. The magnetic prospecting model of copper deposits in the metallogenic belt in Dobaoshan area of Heilongjiang Province is summarized. The detailed work and results are as follows: 1) the low-altitude magnetic survey system of the dynamic delta wing is introduced. Compared with other magnetic measurements, the advantage of low-altitude magnetic measurement of dynamic delta wing in some complex terrain is confirmed by comparing the measured low-altitude magnetic data with other magnetic measurements. (2) the conventional magnetic data processing method is briefly introduced, and the theoretical model is established to verify the applicability of the potential field separation method and boundary recognition. (3) processing the low-altitude magnetic data of the dynamic delta wing in the Dobaoshan area of Heilongjiang to understand the distribution of the magnetic basement; The range of fault distribution is inferred. The boundary of the magnetic geological body is determined. (4) the application of the low-altitude magnetic survey data of the dynamic delta wing in the copper mine area is analyzed by means of the interpretation results of the measured data, the geological map and the related geophysical data. The prospecting model of copper deposit by using low altitude magnetic data is summarized.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.41

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