大极距多通道扩频激电法在矿产勘查中的应用研究  

Research on the application of multi-channel spread-spectrum IP method in mineral exploration

作　　者：李小强 刘海飞[1] 李望明 陈儒军[1] 柳建新[1] 姚红春[1] 申瑞杰[1] LI Xiaoqiang;LIU Haifei;LI Wangming;CHEN Rujun;LIU Jianxin;YAO Hongchun;SHEN Ruijie(School of Earth Sciences and Information Physics,Central South University,Changsha 410006,Hunan,China;Ecology Geological Survey and Monitoring Institute of Hunan Province,Changsha 410119,Hunan,China)

机构地区：[1]中南大学地球科学与信息物理学院,湖南长沙410006 [2]湖南省生态地质调查监测所,湖南长沙410119

出　　处：《矿产勘查》2024年第9期1624-1633,共10页Mineral Exploration

基　　金：国家自然科学基金项目(41774149);湖南省生态环境厅项目“土壤重金属污染地球物理与化学分析三维监测技术研究”(HBKYXM-2023032)与“三维电阻率成像法在重金属污染场地调查中的应用研究”(2024SKY-003)联合资助。

摘　　要：湖南锡田矿区成矿背景良好,具有丰富的多金属矿产资源,开展矿产勘查对锡田矿产资源的开发利用具有重要意义。本文在矿区内开展了大极距多通道扩频激电测量,设计了能增大勘探深度和提高野外数据采集效率的大极距多通道观测排列,部署了2条平行的大极距多通道扩频激电法剖面,测线总长度2400m,获得了地下1200 m深处左右的电阻率剖面和幅频率剖面,结合地质资料推断了3个矿脉。大极距多通道扩频激电法在湖南锡田的多金属矿产勘查中应用效果良好,能反映出钨锡多金属矿体导致的激电异常,为区内深部多金属矿产资源的开发提供了参考和基础,亦为同类矿产勘查工作提供了借鉴。The Xitian mining area in Hunan Province has a good metallogenic background and rich polymetal⁃lic mineral resources,and it is of great significance to carry out mineral exploration for the development and utiliza⁃tion of Xitian mineral resources.In this paper,the large-pole multi-channel spread-spectrum IP measurement was carried out in the mining area,the large-pole multi-channel observation arrangement was designed to increase the exploration depth and improve the efficiency of field data collection,and two parallel large-pole multi-channel spread-spectrum IP profiles were deployed,with a total length of 2400 m,and the resistivity profile and amplitudefrequency profile of about 1200 m underground were obtained,and three ore veins were inferred based on geologi⁃cal data.The large-pole multi-channel spread-spectrum IP method has been applied well in the exploration of polymetallic minerals in Xitian,Hunan Province,which can reflect the IP anomaly caused by tungsten-tin polymetallic ore body,which provides a reference and basis for the development of deep polymetallic mineral resources in the area,and also provides a reference for the exploration of similar minerals.

关 键 词：锡田矿区 大极距多通道扩频激电法 幅频率 多金属矿体 

分 类 号：P631[天文地球—地质矿产勘探] P624[天文地球—地质学]