高密度电法与瞬变电磁法在溶洞探测中的应用
Application of multi-electrode resistivity method and transient electromagnetic method in cave detection
钟燕青 1李升科1
作者信息
- 1. 安徽省地质矿产勘查局 311 地质队,安徽 安庆 246000
- 折叠
摘要
在矿山施工、开采中,若存在溶洞时常对工程带来一定风险,故一般在矿山开采前采取相应手段提前了解溶洞的地下分布情况,规避危险.高密度电法与瞬变电磁法在探测地下岩矿石分布情况是比较常用的物探方法,但均存在一定局限性,针对此情况,本文在可能存在地下溶洞区域中,分别实施两种方法,充分利用两种方法的优势,使二者之间局限性形成互补.应用瑞典高密度软件、中国地大(武汉)研究的瞬变电磁处理软件对测得的视电阻率数据进行二维反演处理,取得视电阻率断面图.通过分析视电阻率的变化特征、异常值,推测溶洞可能位置及溶洞形态特征.
Abstract
In mine construction and mining,if there is a karst cave often bring risks to the project,so generally in the mine before mining to take the corresponding means to understand the underground distribution of karst caves in advance,to avoid the danger.Multi-electrode resistivity method and transient electromagnetic method in the detection of underground rock and ore distribution is more commonly used physical exploration methods,but there are certain limitations.In view of this situation,this paper implemented the two methods in the areas where underground karst caves may exist,and made full use of the advantages of the two methods,so that the limitations of the two methods form a complementary.The two-dimensional inversion of the measured apparent resistivity data was carried out by using the high-density software of Sweden and the transient electromagnetic processing software of China University of Geosciences(Wuhan)to obtain the cross-sectional diagram of the apparent resistivity.By analyzing the change characteristics and outliers of apparent resistivity,the possible location of the cave and the morphological characteristics of the cave were speculated.
关键词
溶洞/高密度电法/瞬变电磁法/局限性Key words
karst cave/multi-electrode resistivity method/transient electromagnetic method/limitations引用本文复制引用
出版年
2024
NETL
NSTL
万方数据