天津蓟州五名山滑坡隐患早期识别监测

为精确识别五名山滑坡隐患，利用Sentinel-1A/B升降轨数据，基于SBAS-InSAR技术反演2017-03~2021-04该地区垂向和坡向形变，识别滑坡灾害以及隐患点，对形变时间序列及滑坡原因进行分析。结果表明，五名山潜在地质灾害隐患可分为3个区域，其中最大垂向累积形变达-38.28 mm，临空面坡体最大坡向累积形变为22.10 mm；降水量对坡体稳定性具有不同程度的影响，坡体累积形变峰值滞后于降水峰值。研究成果可回溯蓟州五名山滑坡灾害形变特征，为天津北部山区地质灾害监测识别提供新思路，为防灾减灾提供保障和技术支持。

Early Identification and Monitoring of Wuming Mountain Landslide Hazards in Jizhou,Tianjin

To accurately identify the Wuming mountain landslide hazards, based on SBAS-InSAR technology, we use Sentinel-1A/B ascending and descending track data to invert the vertical and slope deformation of the area from March 2017 to April 2021. We identify the landslide hazards and dangerous points, then analyze the time series of deformation and the reason of landslides. The results show that the potential geological hazards in Wuming mountain can be divided into three main areas, in which the maximum vertical cumulative deformation reaches -38.28 mm, and the maximum slope cumulative deformation near the free surface is 22.10 mm. The amount of precipitation has different degrees of influence on the stability of slope, and the peak value of cumulative deformation of slope lags that of precipitation. The research results can trace back the deformation characteristics of Wuming mountain landslide hazards in Jizhou, provide new reference and ideas for the monitoring and identification of geological disasters in northern mountainous areas of Tianjin and offer guarantees and technical support for disaster prevention and mitigation.