摘要
在西南山区公路隧道勘测和开挖施工过程中,开展含水不良地质体超前地质探测工作,查明地下隐伏岩溶和富水地质构造体(带)的分布情况,对工程建设和后期运行维护具有十分重要的意义。瞬变电磁法是以等值反磁通原理为基础,对地下纯二次场进行探测的一种新型方法。这种方法很好地适应了隧道环境的局限性和特殊性。本文介绍了ADTEM-18坑道等值反磁通瞬变电磁地质超前预报在云南某公路隧道中的应用情况,并与TGS隧道地震波法超前探测的横波波速进行了对比研究。
In the process of road tunnel survey and excavation construction in southwest mountainous area,it is of great significance to carry out advanced geological exploration of poor water-bearing geological bodies and find out the distribution of underground hidden karst and water-rich geological structures(belts)for engineering construction and subsequent operation and maintenance.The transient electromagnetic method is a new method for detecting the pure secondary field underground based on the opposing-coils principle.This approach adapts well to the limitations and peculiarities of the tunnel environment.This paper introduces the application of ADTEM-18 tunnel opposing-coils transient electromagnetic method for geological advance prediction in a road tunnel in Yunnan Province,and compares with the shear wave velocity of TGS tunnel seismic wave method for advanced detection.
作者
何宇
He Yu(Broadvision Engineering Consultants Co.,Ltd.,Kunming 650011,Yunnan Province,China)
出处
《科学与信息化》
2023年第22期34-36,共3页
Technology and Information
关键词
隧道
等值反磁通瞬变电磁
超前地质预报
tunnel
opposing-coils transient electromagnetics
advance geological prediction
