基于无人机地空瞬变电磁法的水库库区滑坡体探测研究  

Landslide Detection in Reservoir Area Based on UAV Ground-space Transient Electromagnetic Method

作　　者：史俊杰 SHI Junjie(Liaoning Water Conservancy and Hydropower Survey and Design Research Institute Co.,Ltd.,Shenyang,Liaoning 110006,China)

机构地区：[1]辽宁省水利水电勘测设计研究院有限责任公司,辽宁沈阳110006

出　　处：《水利与建筑工程学报》2024年第6期149-154,共6页Journal of Water Resources and Architectural Engineering

摘　　要：为了预防水库库区滑坡灾害、保障水库安全,以江口水库库区为研究对象,提出基于无人机地空瞬变电磁法的滑坡体探测方法。通过麦克斯韦方程组计算出水库的磁感应强度,结合磁感应强度、无人机发射的信号以及探测半径,确定探测的方位角;基于无人机地空瞬变电磁法,结合多个探测点所获取的感应电动势数据,定位滑坡体异常位置;利用GNSS技术和多种测量工具,对滑坡体变形量参数进行系统的计算,确定水库库区滑坡体的变形量,实现滑坡体探测。结果表明,该方法探测结果的准确性始终保持在95%以上,能够有效识别出高程位置的变形情况,该水库库区的滑坡体变形程度较小,且变形速率缓慢,目前处于相对稳定的状态,其危险性相对较低。In order to prevent slope disasters in the reservoir area and ensure the safety of the reservoir,a landslide detection method based on unmanned aerial vehicle ground air transient electromagnetic method is proposed.By taking the Jiangkou Reservoir area as the research object,this work calculated the magnetic induction intensity of the reservoir through Maxwell's equations,and determined the azimuth of the detection by combining the magnetic induction intensity,the signal emitted by the drone,and the detection radius.Based on the unmanned aerial vehicle ground to air transient electromagnetic method,combined with the induced electromotive force data obtained from multiple detection points,locate the abnormal position of the landslide body.Using GNSS technology and various measurement tools,a systematic calculation of the deformation parameters of the landslide body is carried out to determine the deformation of the landslide body in the reservoir area and achieve landslide detection.The experimental results show that the accuracy of the detection results of this method always remains above 95%,and it can effectively identify the deformation of the elevation position.The deformation degree of the landslide body in the reservoir area is small,and the deformation rate is slow.Currently,it is in a relatively stable state,and its danger is relatively low.

关 键 词：地空瞬变电磁法 滑坡体 磁感应强度 GNSS技术 

分 类 号：P631[天文地球—地质矿产勘探]