Abstract: Based on satellite remote sensing optical image and InSAR technology, a watershed, a deformation body and a debris flow gully in Southwest China are taken as research objects to carry out the safety risk identification of hydropower station slope. The results show that the regular general survey of geological hazards in river basins based on satellite remote sensingcan lays a good foundation for early risk identification and precise positioning of monitoring targets. Compared with traditional methods, it has the advantages of high precision, wide coverage and low cost in the aspects of dynamic monitoring and tracking of hidden geological hazards. At the same time, it can provide technical support for the inversion of induced causesand evolution laws of geological hazards such as debris flow. The satellite remote sensing technology has a good application prospect in the safety risk identification of hydropower station slope.

Key words: remote sensing optical image, InSAR, safety risk identification, evolution law analysis, cause inversion

摘要： 基于卫星遥感光学影像和InSAR技术，以我国西南部某流域、某变形体、某泥石流沟为研究对象，开展水电站边坡风险识别及应用研究工作。研究成果表明，基于卫星遥感技术的流域性地质灾害定期普查可为风险早期识别、精准定位监测目标打下良好基础，在目标地质灾害隐患点动态监测、跟踪分析等方面相较传统手段具有精度高、覆盖广、成本低廉等优势，同时可为反演泥石流等地质灾害诱发成因与演变规律提供技术支撑。卫星遥感技术在水电站边坡安全风险识别领域具有良好的应用前景。

关键词: 遥感光学影像, InSAR, 安全风险识别, 演变规律分析, 成因回溯