| 基于SBAS-InSAR技术的白鹤滩水电站库岸潜在滑坡变形分析 |
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| 引用本文： | 杨正荣,喜文飞,史正涛,肖波,周定义.基于SBAS-InSAR技术的白鹤滩水电站库岸潜在滑坡变形分析[J].中国地质灾害与防治学报,2022,33(5):83-92. |
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| 作者姓名： | 杨正荣 喜文飞 史正涛 肖波 周定义 |
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| 作者单位： | 1.云南师范大学地理学部，云南 昆明 650500 |
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| 基金项目： | 云南省科技厅面上项目（202001AT070059）；云南省自然科学基金重点项目（202101AS070019） |
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| 摘 要： | 库岸潜在滑坡变形分析是保障国家水利水电设施安全运行的重要环节，针对仅利用单一轨道SAR数据对库岸潜在滑坡变形监测不准确的问题，采用SBAS-InSAR技术，联合升降轨Sentinel-1 SAR数据构建研究区2019年7月至2021年7月的雷达视线方向形变时间序列，并结合无人机野外调查，分析白鹤滩水电站库岸典型潜在滑坡...
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| 关 键 词： | SBAS-InSAR技术 滑坡灾害 地表形变 变形分析 白鹤滩水电站 |
| 收稿时间： | 2022-02-26 |
Deformation analysis in the bank slopes in the reservoir area of Baihetan Hydropower Station based on SBAS-InSAR technology |
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| Abstract: | The analysis of potential landslide deformation on the reservoir bank is an important link to ensure the safe operation of national water conservancy and hydropower facilities. In response to the problem of inaccurate monitoring of potential landslide deformation on the reservoir bank using single-track SAR data only, this paper uses SBAS-InSAR technology to construct the radar line-of-sight directional deformation of the study area from July 2019 to July 2021 by combining elevated-track Sentinel-1 SAR data time series, and unmanned aircraft field surveys were combined to analyse the deformation characteristics of typical potential landslides on the reservoir bank of Baihetan hydropower station. The results show that: (1) under the influence of water storage factors, the average growth rate of potential landslide deformation on the reservoir bank of Baihetan hydropower station reaches more than 10 mm/a. Reservoir bank stability is undermined; (2) water storage changes are the key causal factor in the development of reservoir bank potential landslides at present. The potential landslides on the reservoir bank of Baihetan Hydropower Station are at risk of instability with the joint effect factors such as water storage and rainfall; (3) the method which combined lift-track SAR data can effectively overcome the problems such as geometric distortion caused by a single track, and make the monitoring of potential landslide deformation on the reservoir bank of hydropower station more accurate and comprehensive. The research result can help to understand the impact of reservoir storage on the deformation trend of reservoir bank potential landslides, and can provide scientific support for regional-scale disaster prevention and emergency management. |
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