| 高海拔排土场边坡安全稳定性SBAS-InSAR监测 |
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| 引用本文： | 董建军,梅媛,李昕,刘士乙,闫斌.高海拔排土场边坡安全稳定性SBAS-InSAR监测[J].中国安全科学学报,2022(1):92-101. |
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| 作者姓名： | 董建军 梅媛 李昕 刘士乙 闫斌 |
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| 作者单位： | 辽宁工程技术大学安全科学与工程学院;辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室;东北大学资源与土木工程学院;华新水泥股份有限公司西部区域西藏基地 |
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| 基金项目： | 国家自然科学基金资助(52074148);辽宁省教育厅科学研究经费项目(LJ2020JCL019)。 |
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| 摘 要： | 为解决高海拔排土场边坡安全稳定性监测中常规监测仪器布置和人员值守的高投入、高风险问题,分析西藏山南桑日县某排土场边坡25景Sentinel-1A数据,利用短基线集合成孔径雷达干涉测量(SBAS-InSAR)技术监测终了排土场边坡从2018年11月4日-2020年12月23日期间的地表形变,采用基线估计状态空间模型、自适...
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| 关 键 词： | 高海拔 排土场边坡 安全稳定性 短基线集合成孔径雷达干涉测量(SBAS-InSAR) 形变监测 |
SBAS-InSAR monitoring of slope safety and stability of high altitude dumps |
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| DONG Jianjun,MEI Yuan,LI Xin,LIU Shiyi,YAN Bin.SBAS-InSAR monitoring of slope safety and stability of high altitude dumps[J].China Safety Science Journal,2022(1):92-101. |
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| Authors: | DONG Jianjun MEI Yuan LI Xin LIU Shiyi YAN Bin |
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| Institution: | (College of Safety Science and Engineering,Liaoning Technical University,Huludao Liaoning 125105,China;Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education,Liaoning Technical University,Huludao Liaoning 125105,China;School of Resources and Civil Engineering,Northeastern University,Shenyang Liaoning 110819,China;Tibet Base,Western Region,Huaxin Cement Co.Ltd.,Shannan Tibet 856000,China) |
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| Abstract: | In order to solve the problem of high investment and high risk in the arrangement of conventional monitoring instruments and personnel on duty for monitoring of slope safety and stability of high-altitude dumps,Sentinel-1A data of 25 scenarios for a dump site in Sangri County,Shannan,Tibet were studied.SBAS-InSAR was used to monitor the surface deformation of the final dump's slope from November 4,2018 to December 23,2020.Then,baseline estimation state-space model,perform adaptive filtering and minimum cost stream were adopted for phase unwrapping,and image registration,interference processing and flat ground effect calculation were performed.Finally,considering the influence of temperature and rainfall on data in high-altitude areas across dry and wet seasons,an average deformation rate map was generated,and safe and stable states of the dump's slope were evaluated based on results of deformation monitoring.The results show that the maximum average deformation rate of the example from 2018 to 2020 was-13.90mm/a,and it reached the yellow warning threshold on June,2020.With necessary preventive steps being taken,the settlement rate is effectively controlled and slowed down.The practical results indicate the application of SBAS-InSAR can achieve dynamic,comprehensive coverage,and long-term reliable monitoring of slope safety and stability of high-altitude dumps. |
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| Keywords: | high altitude dump slope safety and stability small baseline subset-interferometric synthetic aperture radar(SBAS-InSAR) deformation monitoring |
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