摘要
变形监测是了解滑坡演化过程的重要手段,为探究实孔径毫米波雷达(RAR)的边坡变形监测性能,采用摄影滑轨作为变形模拟装置,开展实孔径毫米波雷达的变形监测模拟试验,并结合工程案例分析。研究表明:①实孔径毫米波雷达具备变形监测的能力,当摄影滑轨返回至原点时,实孔径毫米波雷达的误差仅为-4.68 mm和6.39 mm,整体能准确反映出摄影滑轨的变形特征;②单台实孔径毫米波雷达能监测到水平覆盖范围在200 m以内的角反射体,且能得到较好的变形信息,可满足中型滑坡体的监测需求;③整体验证了三维坐标解译原理的可行性,在变形量达到970 mm时,其解译的空间位移误差为9 mm,误差比小于1%,方位角的解译与实际滑轨运动方向趋于一致。综合模拟试验及工程案例表明,实孔径毫米波雷达满足滑坡变形监测的需求,具有较强的稳定性。
Deformation monitoring is a critical way to understand the evolution of landslides.To research the performance of real aperture millimeter-wave radar for slope deformation monitoring,a photographic slide was used as a deformation simulation device to conduct simulation tests.Combined with the engineering case analysis,it shows that:①Real aperture millimeter wave radar has the ability of deformation monitoring;when the photographic slide returns to the origin,the error of real aperture millimeter wave radar is only-4.68 mm and 6.39 mm,which can accurately reflect the deformation characteristics of the photographic slide;②A single set of real aperture millimeter wave radar can monitor the horizontal coverage of the angular reflector in the range of 200 m or less,and can get a better deformation information,which can meet the monitoring needs of medium-sized landslides.③The feasibility of the principle of 3D coordinate interpretation is verified as a whole.When the deformation amount reaches 970 mm,the interpreted spatial displacement error is 9 mm and the error ratio is less than 1%,and the interpreted azimuth complies with actual landslide movement direction.Comprehensive simulation tests and engineering cases show that the real aperture millimeter wave radar meets the needs of landslide deformation monitoring with strong stability.
作者
朱劲
王剑锋
陈垦
唐勇
李天斌
ZHU Jin;WANG Jianfeng;CHEN Ken;TANG Yong;LI Tianbin(Shudao Investment Group Co.,Ltd.,Chengdu 610041,China;College of Environment and Civil Engineering,Chengdu University of Technology,Chengdu 610059,China;State Key Laboratory of Geohazard Prevention and Geo-environment Protection,Chengdu University of Technology,Chengdu 610059,China;Sichuan Digital Transportation Tech Co.,Ltd.,Chengdu 610041,China;Sichuan Shudao New Material Tech Co.,Ltd.,Chengdu 610041,China)
出处
《人民长江》
北大核心
2023年第12期147-155,共9页
Yangtze River
基金
中铁二院工程集团有限公司科研项目(科2017-10)。
关键词
实孔径毫米波雷达
变形监测
滑坡模拟装置
三维坐标解译
real aperture millimeter wave radar
deformation monitoring
landslide simulation device
3D coordinate interpretation
作者简介
朱劲,男,高级工程师,硕士,主要从事公路建设方面的工作。E-mail:9678889@qq.com;通信作者:李天斌,男,教授,博士生导师,博士,主要从事地下工程和斜坡地质灾害领域的教学和研究工作。E-mail:ltb@cdut.edu.cn。
