激发极化法在会理拉拉石龙铜铁矿中的应用研究
发布时间：2019-02-22 15:07
【摘要】：激发极化法是目前探测侵染状金属硫化物、氧化物以及斑岩型金属矿床的最有效的地球物理方法之一,具有较高的分辨率和工作效率。四川矿产资源丰富,种类齐全,在全国具有举足轻重的地位。随着多数矿区地表矿的日益减少,寻找隐伏和中深部矿床成为深部找矿的重要任务。本论文对拉拉(石龙)铜铁矿的激发极化法资料进行了处理解释,为查明该区域内断裂构造的空间分布、对异常体的影响、圈定矿床异常区,确定矿体深度、形态、位置等提供依据。本论文主要工作和成果包括:(1)从分析拉拉石龙铜铁矿床的地质概况和地球物理特征入手,根据前期工作资料分析,用激电工作方法进行局部矿床勘探试验。(2)使用有限元方法实现激电二维正演数值模拟,对不同地层数、板状体的不同倾斜方向以及起伏地形等模型进行对比分析,获得垂直板状体和水平板状体的激电正演拟断面图及它们的区别标志。(3)采用突出低阻高极化异常的视激电率参数和显示炭质板岩异常的自然电位参数综合分析,多角度地对激电异常进行分析和合理推断。(4)通过对研究区采集的激电中梯扫面和激电对称四极测深观测数据进行预处理,使用最小二乘反演程序反演对称四极实测数据,对剖面异常和对称四极反演的视电阻率和视极化率异常做出初步的判断和解释。(5)结合该剖面收集到的音频大地电磁测深法资料对结果进行了合理的推断解释,圈定了矿体异常,有一定的实际意义。
[Abstract]:The method of induced polarization is one of the most effective geophysical methods for detecting invasive metallic sulphides oxides and porphyry metal deposits with high resolution and efficiency. Sichuan is rich in mineral resources and has a wide range of resources and plays an important role in the country. With the decrease of surface deposits in most mining areas, it is an important task to search for concealed and middle deep ore deposits. In this paper, the induced polarization data of Lala (Shilong) copper ore deposit are processed and interpreted. In order to find out the spatial distribution of fault structure in this area, to influence the abnormal body, to delineate the abnormal area of ore deposit, to determine the depth and shape of ore body. Position, etc., to provide the basis. The main work and achievements of this paper are as follows: (1) from the analysis of geological and geophysical characteristics of Lala Shilong copper ore deposit, according to the previous work data analysis, (2) the finite element method is used to realize the two-dimensional forward numerical simulation of IP, and the models of different strata, different inclined direction of plate body and undulating terrain are compared and analyzed. The forward induced pseudosectional diagrams of vertical and horizontal plate bodies are obtained and their distinguishing marks are obtained. (3) Comprehensive analysis of the apparent induced rate parameters and the natural potential parameters which show the anomaly of carbonaceous slate is adopted, which highlights the anomaly of low resistivity and high polarization. (4) by preprocessing the observed data of the ladder surface and the symmetric quadrupole sounding in the study area, the symmetric quadrupole measured data are retrieved by using the least square inversion program. The apparent resistivity and apparent polarizability anomalies of profile anomaly and symmetrical quadrupole inversion are preliminarily judged and interpreted. (5) the results are reasonably inferred and interpreted in combination with the audio magnetotelluric sounding data collected from the section. The anomaly of ore body is delineated, which has certain practical significance.
【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】：P618.41;P618.31;P631.324
本文编号：2428343
[Abstract]:The method of induced polarization is one of the most effective geophysical methods for detecting invasive metallic sulphides oxides and porphyry metal deposits with high resolution and efficiency. Sichuan is rich in mineral resources and has a wide range of resources and plays an important role in the country. With the decrease of surface deposits in most mining areas, it is an important task to search for concealed and middle deep ore deposits. In this paper, the induced polarization data of Lala (Shilong) copper ore deposit are processed and interpreted. In order to find out the spatial distribution of fault structure in this area, to influence the abnormal body, to delineate the abnormal area of ore deposit, to determine the depth and shape of ore body. Position, etc., to provide the basis. The main work and achievements of this paper are as follows: (1) from the analysis of geological and geophysical characteristics of Lala Shilong copper ore deposit, according to the previous work data analysis, (2) the finite element method is used to realize the two-dimensional forward numerical simulation of IP, and the models of different strata, different inclined direction of plate body and undulating terrain are compared and analyzed. The forward induced pseudosectional diagrams of vertical and horizontal plate bodies are obtained and their distinguishing marks are obtained. (3) Comprehensive analysis of the apparent induced rate parameters and the natural potential parameters which show the anomaly of carbonaceous slate is adopted, which highlights the anomaly of low resistivity and high polarization. (4) by preprocessing the observed data of the ladder surface and the symmetric quadrupole sounding in the study area, the symmetric quadrupole measured data are retrieved by using the least square inversion program. The apparent resistivity and apparent polarizability anomalies of profile anomaly and symmetrical quadrupole inversion are preliminarily judged and interpreted. (5) the results are reasonably inferred and interpreted in combination with the audio magnetotelluric sounding data collected from the section. The anomaly of ore body is delineated, which has certain practical significance.
【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】：P618.41;P618.31;P631.324
【参考文献】
相关期刊论文 前2条
1 童茂松,王伟男,范清华,姜亦忠,王荣,杜国同;利用激发极化驰豫时间谱确定渗透率的实验研究[J];吉林大学学报(地球科学版);2004年04期
2 李帝铨;王光杰;底青云;付长民;石昆法;李英贤;;大功率激发极化法在额尔古纳成矿带中段找矿中的应用[J];地球物理学进展;2007年05期
相关硕士学位论文 前1条
1 韩耀宗;综合物探方法在拉拉铜矿深部隐伏矿体勘探中的应用研究[D];成都理工大学;2012年
，本文编号：2428343
本文链接：https://www.wllwen.com/kejilunwen/diqiudizhi/2428343.html
