矿产勘查中单通道接收机快速三极电测深法研究及应用  

Research and Application on Fast Three-Electrode Electric Sounding with Single-Channel Receiver Method

作　　者：刘新业 马宏 魏丰 LIU Xinye;MA Hong;WEI Feng(China Geological and Mining Corporation)

机构地区：[1]中国地质矿业有限公司,北京市朝阳区100029

出　　处：《现代矿业》2025年第2期152-157,共6页Modern Mining

摘　　要：深部矿产勘查中,物探常规三极电测深方法使用单通道接收机进行野外测量时,需要进行多次往返“跑极”以完成不同水平和深度测点的电性测量,测量效率较低且成本较高。研发的单通道接收机快速三极电测深装置改进了常规电测深测量方式,通过将多道电信号同时引至接收端,使用电道转换选择装置,进行接收通道的选择后,连接至单通道接收机,切换不同电道以实现不同位置测点的电性测量,有效提高测量效率的同时降低了成本。在科特迪瓦某金矿勘查实践中,根据快速三极电测深法圈定的变火山岩与石墨片岩层接触带是重要金矿化带赋存部位,经钻探深部验证发现规模和品位较好的金化矿体,证明了该方法在深部矿产快速勘查的可行性以及有效性,在该区金矿勘查中具有一定推广价值。In deep mineral exploration,when the conventional three-electrode sounding method uses a single channel receiver for field measurement,it needs to carry out multiple round-trip"electrode run-ning"to complete the electrical property measurement at different levels and depths,which is low in mea-surement efficiency and high in cost.The developed fast three-electrode electric sounding with single-chan-nelreceiver method improves the conventional electric sounding measurement method.By leading multiple electrical signals to the receiving end at the same time,using the channel conversion and selection device to select the receiving channel and then connecting to the single-channel receiver,switching different chan-nels to realize the electrical measurement at different locations,the measurement efficiency is effectively im-proved andthe cost is reduced.Through its application in the exploration practice of a gold deposit in Côte d'Ivoire,the contact zone between the metamorphic volcanic rock and the graphite shillite delineated ac-cording to the fast three-electrode electrical sounding method is an important occurrence location of the gold mineralization zone.Through the deep drilling verification,the gold mineralization ore body with good scale and grade is found,which proves the feasibility and effectiveness of the method in the rapid exploration of deep minerals.It has a certain extension value in gold exploration in this area.

关 键 词：单通道接收机 快速三极电测深法 电道转换选择装置 矿产勘查 

分 类 号：P631.3[天文地球—地质矿产勘探]