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印度查莫利“2·7”冰岩山崩堵江溃决洪水灾害链研究

殷跃平 李滨 张田田 王猛 万佳威 刘晓杰 高杨 朱赛楠

殷跃平, 李滨, 张田田, 王猛, 万佳威, 刘晓杰, 高杨, 朱赛楠. 2021: 印度查莫利“2·7”冰岩山崩堵江溃决洪水灾害链研究. 中国地质灾害与防治学报, 32(3): 1-8. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-01
引用本文: 殷跃平, 李滨, 张田田, 王猛, 万佳威, 刘晓杰, 高杨, 朱赛楠. 2021: 印度查莫利“2·7”冰岩山崩堵江溃决洪水灾害链研究. 中国地质灾害与防治学报, 32(3): 1-8. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-01
Yueping YIN, Bin LI, Tiantian ZHANG, Meng WANG, Jiawei WAN, Xiaojie LIU, Yang GAO, Sainan ZHU. 2021: The February 7 of 2021 glacier-rock avalanche and the outburst flooding disaster chain in Chamoli, India. The Chinese Journal of Geological Hazard and Control, 32(3): 1-8. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-01
Citation: Yueping YIN, Bin LI, Tiantian ZHANG, Meng WANG, Jiawei WAN, Xiaojie LIU, Yang GAO, Sainan ZHU. 2021: The February 7 of 2021 glacier-rock avalanche and the outburst flooding disaster chain in Chamoli, India. The Chinese Journal of Geological Hazard and Control, 32(3): 1-8. doi: 10.16031/j.cnki.issn.1003-8035.2021.03-01

印度查莫利“2·7”冰岩山崩堵江溃决洪水灾害链研究

doi: 10.16031/j.cnki.issn.1003-8035.2021.03-01
基金项目: 中国地质调查局地质调查项目(DD20211540)
详细信息
    作者简介:

    殷跃平(1960-),男,研究员,博士生导师,主要从事地质灾害防治技术研究工作。E-mail:yyueping@mail.cgs.gov.cn

  • 中图分类号: P642.2

The February 7 of 2021 glacier-rock avalanche and the outburst flooding disaster chain in Chamoli, India

  • 摘要: 2021年2月7日,印度查莫利北部里希恒河发生高位冰岩山崩堵江溃决洪水灾害链,造成下游20 km外的水电站和桥梁设施破坏,死亡、失踪人口近200人。文章运用多期高分辨率遥感影像,对比分析了印度查莫利里希恒河流域高位冰岩山崩灾害发生前后滑源区、堆积区变化特征,初步探讨了山崩的运动过程。结果显示:2013年以前,崩滑体蠕滑位移量较小,其表面冰雪覆盖层裂缝发育不明显;2013—2017年,崩滑体蠕滑位移量显著增加,冰雪覆盖层可见多达62处大小不一的冰裂缝,最长513 m;2021年2月5日卫星影像显示这些冰裂缝已发生连接、贯通,最大宽度为15 m,并于2月7日发生失稳、破坏。据滑后遥感影像,该崩滑体由4组不同方向的大型结构面切割而成,面积约0.32 km2,平均厚度约为70 m,体积约23×106 m3。崩滑体失稳、解体后以碎屑流沿沟谷向下高速运动,受地形拦挡,部分碎屑颗粒在地形急变带堆积且形成堰塞坝。堰塞坝体溃决后,形成山洪灾害。
  • 图  1  查莫利山崩灾害位置地质构造及图

    Figure  1.  Location and geological structure map of the Chamoli avalanche disaster

    图  2  查莫利山崩及周边地区地形图

    Figure  2.  Topographical map of Chamoli avalanche and surrounding area

    图  3  查莫利山崩灾害前滑源区多期遥感影像图

    Figure  3.  Multi-phase RS images of the Chamoli avalanche potential before disaster

    图  4  查莫利山崩灾害滑源区2月5日及2月9日影像对比

    Figure  4.  Image comparison of the Chamoli avalanche two days before and after disaster

    图  5  2016年冰崩前后遥感影像图

    Figure  5.  Comparison of RS images before and after the glacier avalanche in 2016

    图  6  山崩前堰塞区和洪水区遥感影像(2021年2月5日)

    Figure  6.  RS image of damming site and flooding way two days before avalanche on 5 Feb 2021

    图  7  山崩后堆积区卫星遥感影像(2021年2月8日)

    Figure  7.  RS image of damming site and flooding way a day after avalanche on 8 Feb 2021

    图  8  查莫利冰岩山崩堵溃洪水灾害链动过程及分区

    Figure  8.  Disaster chain and dynamic zoning of the Chamoli glacier-rock avalanche and outburst flooding

    图  9  查莫利高位山崩灾害链时间过程遥感影像分区

    Figure  9.  RS-based time process zoning of disaster dynamic of the Chamoli avalanche and flooding chain

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出版历程
  • 收稿日期:  2021-05-14
  • 修回日期:  2021-05-28
  • 刊出日期:  2021-06-25

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