高原冻土覆盖区某铅锌矿的多功能电法试验研究  

The experimental study of integrated electromagnetic technology in metallic ore exploration under plateau permafrost coverage

作　　者：王珺璐[1,2] 林品荣 刘卫强[1] 王萌[2,3] WANG Junlu;LIN Pinrong;LIU Weiqiang;WANG Meng(Institute of Geophysical and Geochemical Exploration,CAGS,Langfang 065000,China;School of Geohysics and Information Technology,China University of Geosciences,Beijing 100083,China;China Aero Geophysics Survey&Remote Sensing Center foe Land and Resources,Beijing 100083,China)

机构地区：[1]中国地质科学院地球物理地球化学勘查研究所,廊坊065000 [2]中国地质大学(北京)地球物理与信息技术学院,北京100083 [3]中国国土资源航空物探遥感中心,北京100083

出　　处：《物探化探计算技术》2018年第5期637-645,共9页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国地质科学院基本科研业务费专项(YYWF201632);国家重点研发计划(2018YFC0603201);地质大调查项目(12120113031700)

摘　　要：青藏高原矿产资源极为丰富,但是高寒冻土覆盖层严重制约了传统电法的勘探效果。以青藏高原某铅锌矿为例,开展了高原冻土覆盖区多功能电法找矿技术的应用试验。在研究区开展了大功率TDIP,快速查明了研究区视极化率与视电阻率分布情况。利用RPIP测深测量,确定了极化体的埋深及空间分布形态。利用了CSAMT测深测量,研究了深部地质体的电阻率异常分布。试验结果表面,三种方法异常一致性较好,圈定的异常范围与已知地质、矿产吻合良好。该研究对解决高原冻土覆盖区金属矿探测具有一定的参考价值,对推进青藏高原矿产资源的勘探与开发具有一定的现实意义。The Tibet plateau is rich in mineral resources,but the plateau frozen soil covering seriously restricted the effect of traditional electromagnetic method exploration.In the Tuotuohe lead-zinc polymetallic deposit,we made the application test of integrated electromagnetic method technology in metallic ore exploration in plateau permafrost coverage.In the study area,the application of high power IP intermediate gradient scanning measurement quickly pinpoint the plane distribution of the IP anomaly;Development of the multi frequency phase IP sounding determine depth and spatial distribution pattern of the polarization body;The application of controllable source audio frequency magnetotelluric sounding can research the resistivity anomaly distribution of deep geological body.The experimental results show that the three measuring methods have good consistency and the results in good agreement with the delineation of range and known geologic and the mineral information.This paper summarized a set of exploration methods and techniques to explore concealed ore deposits which is applicable to the condition of plateau permafrost coverage.It has important significance for metallic ore exploration in Plateau Permafrost coverage.

关 键 词：高原冻土覆盖 金属矿探测 大功率激电中梯法 频谱激电法 可控源大地电磁法 

分 类 号：P631.3[天文地球—地质矿产勘探]