[1]巨淑君,高志良,蒋明成,等.震后大渡河流域丹巴—乐山段地质灾害隐患[J].山地学报,2023,(3):411-421.[doi:10.16089/j.cnki.1008-2786.000758 ]
　JU Shujun,GAO Zhiliang,et al.Post-Earthquake Hidden Dangers of Geological Hazards in the Danba-Leshan Section of the Dadu River Basin, China[J].Mountain Research,2023,(3):411-421.[doi:10.16089/j.cnki.1008-2786.000758 ]
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震后大渡河流域丹巴—乐山段地质灾害隐患
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2023年第3期
页码:
411-421
栏目:
山地灾害
出版日期:
2023-05-20

文章信息/Info

Title:
Post-Earthquake Hidden Dangers of Geological Hazards in the Danba-Leshan Section of the Dadu River Basin, China
文章编号:
1008-2786-(2023)3-411-11
作者:
巨淑君1; 2; 高志良2; 3; 蒋明成2; 高 强2; 屈向阳4
(1.成都理工大学,成都 610059; 2.国能大渡河流域水电开发有限公司,成都 610000; 3.大连理工大学,辽宁 大连 116081; 4.河南理工大学,河南 焦作 454000)
Author(s):
JU Shujun1;  2;  GAO Zhiliang2;  3;  JIANG Mingcheng2;  GAO Qiang2;  QU Xiangyang4
(1. Chengdu University of Technology, Chengdu 610059,China; 2. Guoneng Dadu River Basin Hydropower Development Co., Ltd., Chengdu 610000, China; 3. Dalian University of Technology, Dalian 116081, Liaoning, China; 4. Henan Polytechnic University, Jiaozuo 454000, Henan, China )
关键词:
InSAR;  SBAS;  隐患;  Sentinel-1;  大渡河
Keywords:
InSAR;  SBAS;  geological hazards;  sentinel-1;  the Dadu River
分类号:
P
DOI:
10.16089/j.cnki.1008-2786.000758
文献标志码:
C
摘要:
泸定地震导致大渡河沿线及周边区域分布有大量次生地质灾害和地质灾害隐患点,极大制约了流域内社会经济发展,对该区域进行大范围隐患普查和早期识别,有助于防灾减灾工作的展开。本文基于时序InSAR技术对大渡河流域丹巴—乐山段超过1000 km范围进行了大面积滑坡隐患点普查,并结合PS与SBAS技术有效降低西南地区复杂的时间去相干问题。研究结果表明:(1)8处重点关注区域存在明显的滑坡和崩塌隐患点,主要集中在石棉和泸定地区,其中部分隐患点对流域有较大安全威胁。(2)泸定地震导致黄草坪、郑家坪与新华村典型隐患区产生加速沉降趋势,地面人员应重点观测。本研究可为后续分析泸定地震后灾害分布情况及流域内大坝及边坡变形机理分析和灾害预警提供可靠信息及数据支撑。
Abstract:
Affected by the Luding earthquake, a large number of geological hazards were generated along and around the Dadu River, which greatly restricts the social and economic development of the basin. The large-scale geological hazard survey and early identification of the region are helpful to disaster prevention and mitigation. In this paper, based on the time-series InSAR technology, a large-scale landslide hazard point survey was carried out in the Dadu-Leshan section of the Dadu River basin over 1000 km. Combined with PS and SBAS technology, the complex time decoherence problem in the southwest region was effectively reduced. Results show that:(1)There were obvious landslides and avalanches in eight key areas of concern, mainly concentrated in the Shimin and Luding areas, some of which posed a significant safety threat to the watershed.(2)The Luding earthquake resulted in a accelerated subsidence trend in the typical hazard areas of Huangcaoping, Zhengjiaping, and Xinhua village. The trend should be monitored by ground personnel. This study provides reliable information and data support for subsequent analyses of disaster distribution after the Luding earthquake and the deformation mechanisms of dams and slopes in the watershed, as well as for disaster early warning.

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备注/Memo

备注/Memo:
收稿日期(Received date): 2022-12-23; 改回日期(Accepted date):2023-06-20
基金项目(Foundation item): 四川省科技计划项目(2022YFG0120); 科技创新项目(KB-KY-2021-001)。[Sichuan Science and Technology Plan Project(2022YFG0120); Science and Technology Innovation Project(KB-KY-2021-001)]
更新日期/Last Update: 2023-05-30