长沙理工大学学报（自然科学版）2026，Vol.23Issue(2)：31-46,16.DOI:10.19951/j.cnki.1672-9331.20260108001
多源遥感揭示公路边坡变形与裂缝的耦合机制
Coupling mechanism of deformation and cracks in highway slopes revealed by multi-source remote sensing
摘要
Abstract
[Purposes]In view of the low efficiency and limited coverage of traditional methods in identifying landslides on highway slopes in complex mountainous areas,an efficient and accurate method for identification and mechanism analysis was explored in this paper.[Methods]By taking the typical landslide at K2643+617 on the G357 line in Huaning County,Yunnan Province as the research object,multi-source technologies including persistent scatterer interferometric synthetic aperture radar(PS-InSAR),airborne light detection and ranging(LiDAR),and high-resolution optical remote sensing were integrated to form a technical pathway of collaborative interpretation.The advantages of PS-InSAR in millimeter-level deformation monitoring,airborne LiDAR in vegetation penetration and fine characterization of micro-topography,and optical remote sensing in rapid boundary interpretation were fully leveraged.[Results]The landslide body is in a continuous movement state,with a maximum cumulative deformation of-20 mm and an annual average deformation rate of-8 mm·a-1.Based on airborne LiDAR data,three main landslide cracks at the rear and front edges of the landslide,as well as two engineering deformation boundaries spatially coinciding with the existing anti-slide piles,are accurately identified.The spatial overlay analysis of deformation and cracks shows that the high deformation rate zone(deformation rate of[-8,-4.8)mm·a-1)highly coincides with the dense crack development zone;the main parts of two major cracks are both located in the high deformation rate zone(accounting for 66.7%),and the main part of one major crack is located in the medium deformation rate zone(deformation rate of[1.6,4.8)and[-4.8,-1.6)mm·a-1).The main parts of the two engineering deformation boundaries are both located in the high deformation rate zone(accounting for 100%),which reveals that the middle and front parts of the landslide are the critical areas for deformation accumulation and stress concentration.[Conclusions]This landslide is a traction-type reactivated landslide triggered by anti-slide engineering failure and rainfall,and multi-source remote sensing collaborative technology can provide key technical support for the early identification,mechanism analysis,and risk prevention and control of landslide hazards.It also demonstrates that multi-source remote sensing collaboration can provide crucial technical support for early identification,mechanism analysis,and risk prevention and control of landslide hazards.关键词
公路边坡滑坡/多源遥感/永久散射体合成孔径雷达干涉测量/机载激光雷达/无人机航测/形变监测/裂缝识别Key words
highway slope landslide/multi-source remote sensing/persistent scatterer interferometric synthetic aperture radar/airborne light detection and ranging/aerial survey of unmanned aerial vehicle/deformation monitoring/crack identification分类
交通工程引用本文复制引用
李宁,陈青,桂敬聪,袁利伟..多源遥感揭示公路边坡变形与裂缝的耦合机制[J].长沙理工大学学报（自然科学版）,2026,23(2):31-46,16.基金项目
国家自然科学基金项目(52364020) （52364020）
云南省公路科学技术研究院项目(4530000HT2024141190101) （4530000HT2024141190101）
