| 光学遥感与InSAR结合的金沙江白格滑坡上下游滑坡隐患早期识别 |
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| 引用本文： | 陆会燕,李为乐,许强,董秀军,代聪,王栋.光学遥感与InSAR结合的金沙江白格滑坡上下游滑坡隐患早期识别[J].武汉大学学报(信息科学版),2019,44(9):1342-1354. |
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| 作者姓名： | 陆会燕 李为乐 许强 董秀军 代聪 王栋 |
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| 作者单位： | 1.成都理工大学地质灾害防治与地质环境保护国家重点实验室, 四川 成都, 610059 |
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| 基金项目： | 国家创新研究群体科学基金41521002四川省自然资源厅重大科技支撑研究课题KJ-2018-21四川省科技支撑计划项目2018SZ0339四川省科技支撑计划项目2017JQ0031贵州省科学技术厅科技平台及人才团队计划[2017]5402 |
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| 摘 要： | 2018-10-11和2018-11-03，金沙江上游西藏自治区江达县波罗乡白格村附近先后发生两次大规模高位滑坡堵江。虽经人工干预处置后进行泄流，但还是对下游居民和交通设施造成了严重损失，其上下游是否还存在类似的大规模滑坡隐患，成为白格滑坡灾害发生后社会各界关注的焦点问题。首先利用高精度光学卫星影像对白格滑坡上游30 km和下游100 km范围内的滑坡隐患进行人工目视解译和定性评价，共识别出滑坡隐患51处，其中下游70~100 km范围内有10处具有堵江风险的滑坡隐患。在此基础上，对具有堵江风险的重点区域（白格滑坡下游70~100 km范围内）收集存档ALOS PALSAR-1和Sentinel-1A雷达卫星数据，利用短基线差分干涉测量技术开展滑坡隐患地表形变定量探测和分析评价，共探测出7处具有较显著形变的滑坡隐患，其中3处堵江风险较大，为白格滑坡上下游地质灾害防治和川藏铁路选线提供了参考。
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| 关 键 词： | 金沙江 白格滑坡 光学遥感 短基线差分干涉测量技术 早期识别 |
| 收稿时间： | 2019-03-13 |
Early Detection of Landslides in the Upstream and Downstream Areas of the Baige Landslide,the Jinsha River Based on Optical Remote Sensing and InSAR Technologies |
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| Institution: | 1.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China2.College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China3.China Railway Eryuan Engineering Group Co. Ltd, Chengdu 610031, China |
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| Abstract: | On October 11 and November 3, 2018, two large-scale landslides occurred in the upstream of the Jinsha River near the Baige Village, Polo Town, Jiangda County, Tibet Autonomous Region. Although the drainage was carried out by manual intervention, it still caused severe losses to the residents and transportation facilities in the downstream. Whether there are similar large-scale potential landslides in the upstream and downstream of the Jinsha River has become the social focus issue after the Baige Landslide disaster occurred. Firstly, high-resolution optical satellite images are used to interpret and qualitatively evaluate the potential landslide hazards in the upstream of the Baige Landslide within 30 km and the downstream of the Baige Landslide within 100 km. A total of 51 potential landslides are identified, of which 10 potential landslides in the downstream of the Baige Landslide within 70-100 km have the risk of blocking the river. On this basis, the ALOS PALSAR-1 and Sentinel-1A radar satellite data are collected in the key area (70-100 km downstream of the Baige Landslide) with the risk of river blockage. The quantitative detection and analysis of the potential surface deformation of landslides are carried out by using the small baseline subsets interferometric synthetic aperture radar (SBAS-InSAR). Seven potential landslides are detected to have significant deformation, of which three are at higher risk of river blockage. The research results have been submitted to the Ministry of Emergency Management, Sichuan Natural Resources Department, China Railway Second Academy Engineering Group Co. Ltd. and other departments and units, providing a reference for the prevention and control of geological hazards in the upstream and downstream of the Baige Landslide and the route selection of Sichuan-Tibet railway. |
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