| 遥感技术在“6·17”丹巴堵江泥石流灾害链灾区应急救援抢险决策中的应用 |
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| 作者姓名： | 唐尧 王立娟 赵娟 张成信 |
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| 作者单位： | 1.四川省安全科学技术研究院,成都 610045; 2.四川安信科创科技有限公司,成都 610045; 3.高分辨率对地观测系统四川数据与应用中心,成都 610000; 4.中化地质矿山总局地质研究院,北京 100101 |
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| 基金项目： | 四川省科技厅“川西高山峡谷地区地震与地质灾害态势感知与应急救援研究(编号: 2020YFS0387)”项目资助 |
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| 摘 要： | 2020年6月17日,四川丹巴县半扇门镇梅龙沟发生泥石流,阻断小金川河,形成堰塞湖,造成重大财产损失与人员伤亡。为掌握第一手灾情,辅助开展应急救援,以国产高分二号卫星数据为主要数据源,结合无人机航空摄影数据和灾后现场调查等资料,开展了“6·17”丹巴堵江泥石流灾害链灾区应急调查与分析。研究认为: 灾区影响人口约6.5万人; 国网丹巴县供电公司应急救援队与小金县联通通信应急抢险救援队距离最近,半扇门中学等5所学校可作为临时安置避难场所备选; 受影响矿山企业6家、重要水库1座、水电站1座; 泥石流沟总体呈NW—SE向展布,掩没面积约14.27万m2; 堰塞湖湖面面积约1.03 km2,淹没区约49.8万m2,路基路面全毁路段约2.1 km,下游疑似灾害隐患点9处,因灾受损民居25处、桥梁5处; 优选了2条灾后通达性较好的通往泥石流重灾区的救援生命线。借助遥感技术深入分析泥石流灾害链影响人口等灾情先期研判、灾情灾损应急调查及应急救援生命通道优选,对我国西南山区类似条件地质灾害隐患点的应急抢险救援、防灾减灾工作具有重要的指导意义。
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| 关 键 词： | 遥感技术 梅龙沟泥石流 梅龙堰塞湖 应急调查 |
| 收稿时间： | 2020-07-04 |
Application of remote sensing technology in emergency rescue decision about “6·17” Danba River debris flow disaster chain |
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| Authors: | TANG Yao WANG Lijuan ZHAO Juan ZHANG Chengxin |
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| Institution: | 1. Sichuan Academy of Safety Science and Technology, Chengdu 610045, China; 2. Sichuan Anxin Kechuang Technology Co., Ltd, Chengdu, 610045, China; 3. High-resolvtion Earth Observation System Sichuan Data & Application Center, Chengdu 610000; 4. Geological Research Institute of Sinochem Geology and Mine Administration, Beijing 100101 |
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| Abstract: | On June 17, 2020, a mudslide occurred in Meilongou of Banshanmen Town, Danba County of Sichuan Province, which blocked Xiaojinchuan River and formed a barrier lake, causing heavy property losses and casualties. In order to grasp the first-hand disaster situation and assist emergency rescue and other disposals, combined with the UAV aerial photography data and post-disaster site survey and other data, the authors used the domestic high-score 2 satellite data as the main data source to carry out the emergency investigation and analytical research of emergency rescue decision about “6.17” Danba River debris flow disaster chain. The results show that the affected population is about 65,000 and the nearest emergency rescue teams are from State Grid Danba County Power Supply Company and China Unicom of Xiaojin Country. Five schools, such as Banshanmen middle school, could be used as temporary resettlement shelters. There are six mining enterprises, one important reservoir and one hydropower station affected by the disaster. The debris flow gully is NE—SE distributed, covering about 142,700 m2. And the barrier lake is about 1.03 km2, covering 498,000 m2. The totally destroyed roadbed and road surface were about 2.1 km and there are 9 suspected disaster hidden dangers in the lower reach. Whats more, 25 residential houses and 5 bridges were damaged by the disaster. Two rescue lifelines with good post-disaster accessibility to the severely affected debris flow areas were chosen. With the help of remote sensing technology, the in-depth analysis of the pre-judgment of the affected population by the debris flow disaster chain, emergency investigation of the disaster situation and disaster damage, and the selection of emergency rescue lifelines were successfully conducted, which has great guiding significance in the emergency rescue and disaster prevention and mitigation in the mountainous areas of Southwest China with similar geological conditions. |
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| Keywords: | remote sensing technology Meilonggou debris flow Meilong barrier lake emergency investigation |
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