重大工程建设中地质灾害综合遥感监测技术方法应用——以北京2022冬奥会延庆赛区为例

Application of integrated remote sensing monitoring technology for geological hazards in major engineering construction:A case study of the Yanqing competition area of the Beijing 2022 Olympic Winter Games

随着我国经济社会发展,工程建设成为地质灾害的主要诱因之一。天-空-地一体化综合遥感监测技术能够实现不同尺度、不同规模的立体监测,为重大工程建设中地质灾害隐患提供丰富的监测手段。在阐述天-空-地一体化综合遥感监测技术的基础上,以北京2022年冬奥会延庆赛区为例,针对赛区发育的多类型、多灾种的地质灾害隐患,综合利用高分辨率光学遥感、时序合成孔径雷达干涉测量技术(interferometric synthetic aperture Radar,InSAR)、无人机航空摄影测量、激光雷达(light detection and ranging,LiDAR)和地基干涉雷达测量对赛区地质灾害隐患开展动态监测,查明了泥石流沟内物源变化特征以及工程边坡、雪道的变形区域和时序变形特征,总结了重大工程建设中地质灾害综合遥感监测方法,并提出多手段、多平台、多灾种、全流程的灾害监测应用设想。

With the economic and social advancement in China,engineering construction has become a primary cause of geologic hazards.The space-air-ground integrated remote sensing monitoring technology can achieve three-dimensional monitoring at different scales,thus providing rich monitoring methods for geological hazards in major engineering construction.Based on the technology,this study investigated the Yanqing competition area of the Beijing 2022 Olympic Winter Games.Considering the various types of geological hazards in the Yanqing competition area,this study conducted dynamic monitoring of geological hazards in the area by integrating high-resolution optical remote sensing,time-series interferometric synthetic aperture radar(InSAR),unmanned aerial vehicle(UAV)photogrammetry,light detection and ranging(LiDAR),and ground-based InSAR.The dynamic monitoring results reveal the sedimentary source variations in the debris flow gully as well as the deformation zones and time-series deformation characteristics of engineering slopes and ski tracks.This study summarized the integrated remote sensing monitoring methods for geological hazards in major engineering construction,proposing an application assumption of multi-means,multi-platform,multi-disaster,and whole-process hazard monitoring.