| 基于SBAS-InSAR技术的金沙江流域沃达村巨型老滑坡形变分析 |
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| 引用本文： | 冯文凯,顿佳伟,易小宇,张国强.基于SBAS-InSAR技术的金沙江流域沃达村巨型老滑坡形变分析[J].工程地质学报(英文版),2020,28(2):384-393. |
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| 作者姓名： | 冯文凯 顿佳伟 易小宇 张国强 |
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| 作者单位： | 地质灾害防治与地质环境保护国家重点实验室(成都理工大学)，成都 610059，中国 |
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| 基金项目： | 国家自然科学基金41977252四川省青年科技创新研究团队专项计划项目2017TD0018地质灾害防治与地质环境保护国家重点实验室团队项目SKLGP2016Z001 |
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| 摘 要： | 近年来突发性高位滑塌灾害日益频发,造成恶劣影响。这类地质灾害调查难度高、隐蔽性强,单靠群测群防和地质调查难以解决灾害的防治问题。随着雷达遥感卫星数据质量的不断提升,合成孔径干涉雷达测量(InSAR)中的SBAS-InSAR技术为特大型老滑坡灾前形变探测提供了新的技术途径。利用SBAS-InSAR技术对金沙江流域沃达村滑坡进行地表形变监测,获取了2017年3月30日至2019年9月28日内的形变结果,划定了强烈形变区(Ⅰ雷达)、均匀形变区(Ⅱ雷达),分析了滑坡复活区整体和局部滑塌地表形变速率、累积位移变化趋势和主裂缝形变情况。同时实地进行了工程地质调查和复核,发现老滑坡复活区变形迹象与SBAS-InSAR技术解译成果有着较好的一致性。表明SBAS-InSAR技术在复杂山区地质灾害监测预警领域有较为广阔的应用前景,为类似老滑坡监测预警提供了新的思路与借鉴。
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| 关 键 词： | 沃达村 老滑坡 SBAS-InSAR 形变分析 复核验证 |
| 收稿时间： | 2019-10-08 |
DEFORMATION ANALYSIS OF WODA VILLAGE OLD LANDSLIDE IN JINSHA RIVER BASIN USING SBAS-INSAR TECHNOLOGY |
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| FENG Wenkai,DUN Jiawei,YI Xiaoyu,ZHANG Guoqiang.DEFORMATION ANALYSIS OF WODA VILLAGE OLD LANDSLIDE IN JINSHA RIVER BASIN USING SBAS-INSAR TECHNOLOGY[J].Journal of Engineering Geology,2020,28(2):384-393. |
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| Authors: | FENG Wenkai DUN Jiawei YI Xiaoyu ZHANG Guoqiang |
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| Institution: | Stata Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China |
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| Abstract: | In recent years, unexpected high-level landslides have been increasing, resulting in adverse effects. This kind of geological hazard investigation is very difficult and concealed. It is difficult to solve the problem of disaster prevention and control by group survey and geological investigation alone. With the continuous improvement of the quality of radar remote sensing satellite data, the SBAS-InSAR technology in synthetic aperture Interferometric Radar(InSAR)provides a new technical approach for deformation detection of large-scale old landslides before disaster. The surface deformation of Wodacun landslide in Jinsha River Basin is monitored by SBAS-InSAR technology. The deformation results from March 30, 2017 to September 28, 2019 are obtained. Strong deformation area(Ⅰradar) and uniform deformation area(Ⅱradar) are delineated. The surface deformation rate, cumulative displacement trend and main crack deformation of the whole and local landslide in the revived area are analyzed. At the same time, the engineering geological survey and review are carried out on the spot. It is found that the resurrection and deformation signs of the old landslide are in good agreement with the interpretation results of the SBAS-InSAR technology. It is clear that the SBAS-InSAR technology has broad application prospects in the field of early warning and monitoring of geological disasters in complex mountain areas, and provides new ideas and references for monitoring and early warning similar to old landslides. |
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| Keywords: | Woda village Old landslide SBAS-InSAR Deformation analysis Verification |
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