基于SBAS-InSAR技术的中缅边境山区地质灾害隐患探测

SBAS-InSAR-based detection of geological hazards in alpine gorge areas near the China-Myanmar border

云南省福贡县位于中缅边境,是典型的高山峡谷地区,地质环境脆弱,滑坡、崩塌、泥石流等地质灾害频发,对人民生命财产安全、经济建设和国防安全构成严重威胁。该地区山高林密,传统的人工排查工作较难实施,危险性大。为了实现地质灾害隐患探测,利用Sentinel-1A卫星数据,采用短基线集差分干涉测量(SBAS-InSAR)技术对高山峡谷区域进行了地表变形监测和地质灾害隐患探测,并结合地面调查与光学影像遥感解译对识别结果进行了验证。结果表明,该地区的变形区域大都处于地质条件脆弱地区,在强降雨条件下极易导致滑坡失稳,建议后续开展持续观测。该研究成果对高山峡谷区滑坡调查与监测研究具有参考意义。

Fugong County of Yunnan Province,located near the Yunnan-Myanmar border,is a typical alpine gorge area with a fragile geological environment.Geological hazards,including landslide,collapse,and debris flow,occur frequently in this area,thus posing a severe threat to the safety of people's lives and properties,economic development,and even national defense security.However,high mountains and thick forests in this area complicate manual investigations and increase the risk.Hence,this study conducted surface deformation monitoring and geological hazard detection in this alpine gorge area by employing the small baseline subset-interferometric synthetic aperture radar(SBAS-InSAR)technology based on the Sentinel-1A satellite data.The identification results were verified by combining ground surveys and the interpretation of optical remote sensing images.The findings indicate that most of the deformation zones in this area exhibit fragile geological conditions and are prone to landslide instability in the case of heavy rainfall,thus requiring continuous observation.This study offers a valuable reference for investigating and monitoring landslides in alpine gorge areas.