CSAMT法在辽宁某铜多金属矿勘探的可行性研究

发布时间：2018-05-07 01:08

本文选题：CSAMT法 + 铜矿勘探　；参考：《辽宁工程技术大学》2015年硕士论文

【摘要】：本文以辽宁省宽甸县某铜多金属矿作为研究对象,通过调研了解到,该矿区曾在局部进行过浅部开采,近地表存在工业品位较高的铜矿资源,但采坑周边的地质科学研究程度偏低,考虑到矿区地处山区,常规的直流电法无法达到勘探深度及精度的要求,因此采用CSAMT法对该矿区进行深部勘探,并对该方法的可行性进行研究和评价。本文在阅读大量文献的基础上,首先对CSAMT法的发展过程和研究现状进行了探讨,深入了解CSAMT法的理论基础和工作原理,掌握CSAMT法在数据的处理及反演过程中的具体工作方法,详细分析了CSAMT法的近场效应、过渡带效应、静态效应以及它们的数据校正方法。结合矿区的地质条件,总结出一套适用于复杂地质条件下的CSAMT的工作方法体系：首先在激电中梯扫面得出的5个地球物理异常区域,进行CSAMT测线的布设,其次结合勘探深度要求确定合适的工作参数,最后通过激电异常与反演电阻率剖面图进行联合成果解译,分析并推测成矿的有利地段及控矿的主要因素。为了对该方法的可行性进行判断,随后采用了钻探工程进行深部验证,钻探结果与CSAMT法的解译结果相吻合。结合实际地质情况,说明5个异常都为矿(化)体引起,矿体基本受主构造及其次生构造控制,在该矿区进行CSAMT法中深部勘探是切实可行的,其方案布设是合理的,其成果具有一定的实用价值,可对宽甸地区类似地质条件下金属矿产勘探的攻深找盲工作提供有利的参考价值和借鉴意义。
[Abstract]:In this paper, a copper polymetallic mine in Kuandian County, Liaoning Province is taken as the research object. Through investigation and investigation, it is found that the mining area has been excavated in shallow part, and there are copper resources with high industrial grade near the surface of the earth. However, the degree of geological research around the mining pit is low. Considering the mining area is located in the mountainous area, the conventional direct current method can not meet the requirements of exploration depth and precision. Therefore, the CSAMT method is used to carry out deep exploration in the mine area. The feasibility of this method is studied and evaluated. On the basis of reading a large number of documents, this paper first discusses the development and research status of CSAMT method, deeply understand the theoretical basis and working principle of CSAMT method, and master the specific working methods of CSAMT method in the process of data processing and inversion. The near field effect, transition zone effect, static effect and their data correction methods of CSAMT method are analyzed in detail. In combination with the geological conditions of the mining area, a set of working method system of CSAMT suitable for complex geological conditions is summarized. Firstly, five geophysical anomaly areas obtained from the ladder sweep surface in the IP are arranged by the CSAMT survey line. Secondly, according to the requirements of exploration depth, the suitable working parameters are determined. Finally, through the interpretation of the joint results of the induced electric anomaly and the inversion resistivity profile, the favorable areas of mineralization and the main factors of ore-controlling are analyzed and speculated. In order to judge the feasibility of the method, the drilling engineering was used to verify the feasibility of the method, and the drilling results were in agreement with the interpretation results of the CSAMT method. Combined with the actual geological conditions, it shows that the five anomalies are caused by ore bodies, the ore bodies are basically controlled by main structures and their secondary structures, it is feasible to carry out deep exploration in the CSAMT method in this mine area, and its scheme is reasonable. The results are of certain practical value and can provide a favorable reference value and reference significance for the blind exploration of metal mineral exploration under similar geological conditions in Kuandian area.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.325;P618.2

【参考文献】