等值反磁通瞬变电磁在既有铁路路基岩溶探查中的应用  

Application of Equivalent Inverse Magnetic Flux Transient Electromagnetic in Karst Exploration of Existing Railway Roadbeds

作　　者：曹刚 CAO Gang(China Railway Shanghai Group Co.,Ltd.Xuzhou Engineering Section,Xuzhou 220005,China)

机构地区：[1]中国铁路上海局集团有限公司徐州工务段,徐州220005

出　　处：《价值工程》2024年第21期109-111,共3页Value Engineering

摘　　要：灰岩地区由于其地下空洞、溶洞和裂隙等地质特征,对既有铁路路基的稳定性构成严重威胁。本文采用等值反磁通瞬变电磁法进行探测,结合区域地质资料,圈定了既有铁路路基下方病害的分布位置、大小及形态,通过钻探资料验证了物探结果的可靠性,表明使用等值反磁通瞬变电磁法探测铁路路基岩溶分布是可行且高效的。Limestone areas pose a serious threat to the stability of existing railway embankments due to their geological features such as underground cavities,caves,and fissures.This article uses the equivalent anti magnetic flux transient electromagnetic method for detection,combined with regional geological data,to delineate the distribution location,size,and morphology of existing railway subgrade diseases.The reliability of the geophysical results is verified through drilling data,indicating that using the equivalent anti magnetic flux transient electromagnetic method to detect the distribution of karst in railway subgrade is feasible and efficient.

关 键 词：既有铁路路基 岩溶探查 瞬变电磁法 等值反磁通瞬变电磁法 

分 类 号：P631.325[天文地球—地质矿产勘探]