基于InSAR技术溪洛渡库区活动滑坡形变特征研究  

Deformation characteristics of active landslides in Xiluodu reservoir area based on InSAR technology

作　　者：李启亮 孙永彬[1,2,3] 王诜 汪冰 邓国武[1,2,3] 张策 LI Qiliang;SUN Yongbin;WANG Shen;WANG Bing;DENG Guowu;ZHANG Ce(Airborne Survey and Remote Sensing Center of Nuclear Industry,Shijiazhuang 050002,Hebei,China;Key Laboratory of Airborne Survey and Remote Sensing,Shijiazhuang 050002,Hebei,China;High-resolution Earth Observation System Data Application Technical Support Center of Hebei Province,Shijiazhuang 050002,Hebei,China)

机构地区：[1]核工业航测遥感中心,河北石家庄050002 [2]河北省航空探测与遥感技术重点实验室,河北石家庄050002 [3]高分辨率对地观测系统河北数据应用技术支持中心,河北石家庄050002

出　　处：《矿产勘查》2024年第2期311-319,共9页Mineral Exploration

基　　金：“2020年度云南省重点区域地质灾害(隐患)精细化调查与风险评价”项目(YNLH202011010793)资助。

摘　　要：水电站建设会在一定程度上改变当地自然环境,特别是库区蓄水影响着库区岸坡稳定性,造成库区古滑坡的复活及(或)潜在活动滑坡的失稳,为库区带来了新的地质环境问题。本文以溪洛渡水电站库区为例,采用时序SBAS-InSAR技术对库区活动滑坡隐患的变形特点和发生模式进行了识别研究。结果表明:结合升降轨数据共发现库区存在16处活动滑坡隐患,滑坡不同位置表现出不同的形变速率,均呈现整体向下蠕滑的趋势,发生模式以牵引式滑坡居多。受到库区蓄水、流水浸蚀及汛期降雨的影响,溪洛渡库区地质灾害诱发条件将发生变化,需进一步加强地质灾害监测工作。The construction of hydropower station will change the local natural environment to a certain extent,especially the reservoir water will affect the stability of the bank slope of the reservoir area,resulting in the revival of the ancient landslide or the instability of the potential active landslide,which brings new geological environment problems to the reservoir area.Taking Xiluodu Hydropower Station reservoir area as an example,this paper uses time-series SBAS-InSAR technology to identify and study the deformation characteristics and occurrence patterns of active landslide hidden danger in the reservoir area.The results show that there are 16 active landslide hidden dangers in the reservoir area combined with the lifting rail data.Different positions of the landslide show dif⁃ferent deformation rates,and all showed an overall downward creep trend,and the occurrence patterns are mostly traction landslides.Affected by water storage,water erosion and rainfall in flood season,the induced conditions of geological disasters in Xiluodu reservoir area will change,and geological disaster monitoring needs to be further strengthened.

关 键 词：溪洛渡库区 SBAS-InSAR 地表形变探测 活动滑坡 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]