| 地基InSAR技术及其典型边坡监测应用 |
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| 作者姓名： | 刘斌 葛大庆 李曼 张玲 王艳 郭小方 王毅 |
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| 作者单位： | 中国国土资源航空物探遥感中心,北京 100083 |
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| 基金项目： | 中国地质调查局“地基雷达干涉测量系统与边坡稳定性监测示范(编号: 12120114036401)”、国家自然科学基金“基于改进的高分辨率时序InSAR技术研究KhashMw7.7地震震后形变机制(编号: 41504048)”和民用航天(编号: D010102)项目联合资助 |
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| 摘 要： | 为了开展边坡活动实时监测,研究以IBIS-L地基InSAR系统为代表的地基InSAR形变时序分析关键技术,进行针对不同变形特征的观测方案和数据处理方法的优化,并开展了奉节大树场镇灾后滑坡、神农架林区人工不稳定斜坡和备战铁矿露天采矿边坡等边坡活动的监测应用,以及备战铁矿隧道南口冰川运动的监测试验。4种类型边坡地基InSAR监测结果表明,在复杂工作情况下,地基InSAR设备具有较高的观测稳定性,在满足观测条件的情况下,地基InSAR测量精度能达到亚mm级,已成为监测边坡微小形变的重要技术手段。这扩展了形变监测模式从星载InSAR技术的“大尺度、宽覆盖”走向地基InSAR技术的“小尺度、局部精细测量”,进一步丰富了科研人员对边坡变形现象的动力学过程认识,为“星-地”联合InSAR技术监测地表形变过程奠定了技术基础。
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| 关 键 词： | 地基雷达干涉测量 滑坡 不稳定斜坡 露天采矿边坡 冰川运动 |
| 收稿时间： | 2017-04-24 |
Ground-based interferometric synthetic aperture radar and its application in monitoring typical slopes |
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| Authors: | LIU Bin GE Daqing LI Man ZHANG Ling WANG Yan GUO Xiaofang WANG Yi |
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| Institution: | China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China |
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| Abstract: | In order to do real-time monitoring of slope movement and study the time-series displacement analysis of IBIS-L GB-InSAR, the authors designed and optimized the observation schemes and data processing methods. Landslide of Dashuchang Town, unstable slope of Shennongjia forest region, and open-pit slope of Beizhan iron mine were monitored through the technology. The glacier in the south of Beizhan tunnel was also experimentally measured. The results of GB-InSAR monitoring showed that GB-SAR devices have high observation stability under complex working conditions, and the accuracy of GB-InSAR can reach sub-millimeter level with proper observation conditions. GB-InSAR has become an important technique to monitor the slope displacement. This extends the displacement monitoring mode, making it transferring from“large-scale, wide-coverage” satellite InSAR to“small-scale, locally refined measurement”GB-InSAR. Therefore, it further enriches the understanding of slope deformation phonomenon, and lays the technical foundation for“satellite-ground”combined InSAR to monitor surface deformation process. |
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| Keywords: | Ground-based interferometric synthetic aperture radar(GB-InSAR) landslide unstable slope open-pit slope glacier movement |
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