摘要
探测隐伏断层是坝址勘察中的一项重要工作,物探方法以其快速、高效的特点得到了广泛应用,在坝址区开展地质测绘和掌握地层地球物理特征的基础上,采用高密度电法、大地电磁法(EH4)、瞬变电磁法相结合的综合物探方法对坝址区隐伏断层进行了探测,有效避免了单一物探方法探测结果的多解性和不确定性,成功探测出坝址区隐伏断层的空间分布及其产状等特征,为多种物探方法联合探测隐伏断层的应用及方法探索提供了借鉴意义。
Detecting blind faults is an important work in dam site investigation.Geophysical prospecting method is widely used because of its efficient characteristics.In this paper,based on the geological mapping in the dam site and mastering the geophysical characteristics of the stratum,the comprehensive geophysical prospecting method combining resistivity imaging,electromagnetic method(EH4)and transient electromagnetic method is used to detect the blind faults in the dam site area,which effectively avoids the multi solution and uncertainty of the detection results of a single geophysical method,and successfully detects the empty space of the blind faults in the dam site area.It provides a reference for the investigation and method exploration of multiple geophysical methods in detecting concealed faults.
作者
程红涛
张海丰
CHENG Hongtao;ZHANG Haifeng(Yellow River Engineering Consulting Co.,Ltd.,Zhengzhou 450003,China)
出处
《水科学与工程技术》
2021年第3期25-28,共4页
Water Sciences and Engineering Technology
关键词
综合物探方法
隐伏断层
高密度电法
大地电磁法(EH4)
瞬变电磁法
comprehensive geophysical prospecting method
blind fault
resistivity imaging
electromagnetic method(EH4)
transient electromagnetic method
