微动技术在中深部地质勘探中的应用研究  

APPLICATION OF MICROTREMOR TECHNIQUE IN MIDDLE-DEEP GEOLOGICAL EXPLORATION

作　　者：贾慧涛 王子豪[1] 蔡向阳[1] 徐子桥 JIA Hui-tao;WANG Zi-hao;CAI Xiang-yang;XU Zi-qiao(Institute of Geophysical and Geochemical Survey Technology of Anhui Province,Hefei,Anhui 230022,China)

机构地区：[1]安徽省地球物理地球化学勘查技术院,安徽合肥230022

出　　处：《安徽地质》2021年第4期327-330,共4页Geology of Anhui

基　　金：安徽省公益性地质调查基金项目“安徽省怀远-蒙城一带金、铁多金属矿产调查评价”(编号:2016-g-2-13)资助。

摘　　要：微动勘探技术采集天然源信号,是一种通过计算地下介质中的S波速度结构,探查地质构造的物探新技术。该技术不受电磁干扰、绿色环保,分辨率高、探测范围大、经济高效,在城镇等人口密集区有着传统物探手段不可比拟的优势。目前该技术被广泛应用于地热资源勘探[1,2]、工程地质勘探等,但是研究地下深度不大,基本在300m以浅。我单位在高分辨率频率-波数法理论基础上,对处理方法进行了改进,将其应用于中深部地质勘探,最大探测深度接近2km,取得了良好的勘探效果。Microtremor exploration technology that collects natural source signals is a new geophysical exploration technology to explore geological structures by calculating the S-wave velocity structure in underground media.This technology is free from electromagnetic interference,green and environmentally friendly,with high resolution,large detection range and economic efficiency.It has incomparable advantages over traditional geophysical exploration methods in densely populated areas such as towns.At present,this technology is widely used in geothermal resource exploration[1,2],engineering geological exploration,etc.,but the depth of its reach is not large,basically within 300 m underground.Based on the theory of high resolution frequency-wave number method,our unit has improved the processing method and applied it to middle-deep geological exploration,with the maximum exploration depth being close to 2 km,and achieved good results.

关 键 词：微动勘探 高分辨率频率-波数法 深部勘探 

分 类 号：P631[天文地球—地质矿产勘探]