[1]陈 志a,杨志全b*,刘传秋.云南省麻栗坡县猛硐河“9.02”泥石流调查[J].山地学报,2019,(04):631-638.[doi:10.16089/j.cnki.1008-2786.000454]
　CHEN Zhia,YANG Zhiquan b*,LIU Chuanqiu.Investigation of the “9.02” Debris Flows in Mengdong River,Malipo County, Yunnan, China[J].Mountain Research,2019,(04):631-638.[doi:10.16089/j.cnki.1008-2786.000454]
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云南省麻栗坡县猛硐河“9.02”泥石流调查()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2019年04期
页码:
631-638
栏目:
研究简报
出版日期:
2019-07-30

文章信息/Info

Title:
Investigation of the “9.02” Debris Flows in Mengdong River,Malipo County, Yunnan, China
文章编号:
1008-2786-(2019)4-631-08
作者:
陈 志1a; 2; 杨志全1b*; 刘传秋2
1.昆明理工大学 a.环境科学与工程学院, b.公共安全与应急管理学院,昆明 650093; 2.云南地质工程勘察设计研究院,昆明 650041
Author(s):
CHEN Zhi1a; 2;  YANG Zhiquan 1b*;  LIU Chuanqiu2
1. a. Faculty of Environmental Science and Engineering, b. School of Public Safety and emergency management, Kunming University of Science and Technology, Kunming 650093, China; 2. Yunnan Institute of Geological Engineering Survey and Design, Kunming 650041, China
关键词:
泥石流;  降水;  特征;  猛硐河
Keywords:
debris flow;  precipitation;  characteristic;  the Mengdong River
分类号:
P642.21~C
DOI:
10.16089/j.cnki.1008-2786.000454
摘要:
云南极端天气气候事件造成了地质灾害发生频发。2018年9月2日云南麻栗坡县猛硐河流域发生特大山洪泥石流灾害,造成10多人死伤,11人失联,建筑损毁、河道淤埋、基础设施破坏,直接经济损失达14亿元。通过对麻栗坡县猛硐“9.02”河流域泥石流灾害的现场调查,从物源、地形和水源条件入手,分析了灾害特征与形成演化过程。研究表明,降水是泥石流发生的根本原因,造成沟域内岩土体现出崩滑物源、坡面物源和沟道物源三者的启动及链生效应; 由于泥石流造成微地貌改变,今后泥石流爆发可能性增大,高频率、中小规模泥石流是泥石流活动的特征。从发展趋势看,该流域正处于泥石流发育阶段,存在发生大规模泥石流的可能性。应及时地进行沟道的治理,并加强监测预警。
Abstract:
Extreme weather and climate events in Yunnan, China,evoked frequent occurrences of geological disasters. On September 2, 2018, a massive debris flow hit the Mengdong River of Malipo County, Yunnan Province, China, causing more than 10 deaths and injuries, 11 missing, and it incurred river channel burial, infrastructure damages, with a direct economic losses amounting to 1.4 billion yuan. Based on field investigation on its source, topography and water source conditions of the debris flow, in this research it identified the geohazard characteristics, formation and evolution process for understanding the geohazard provenance. The research suggested that precipitation is the root cause of the catastrophe, which caused rock and soil instability in gully walls along with shallow geomaterial motivation, and then an ensuing chain-effect of failures in slope source and channel source, eventually contributing to the outbreak of debris flow. Taking the long view of geohazards in the Mengdong basin, it will have been evolved into an active development phase. There will be a great possibility of large-scale debris flow occurring in the nearest future. And high frequency and small or medium-scale debris flows will characterize the geohazards in the basin. The engineered treatment of the channel stability of the Mengdong basin should be carried out in a timely manner, and monitoring and early warning should be strengthened for geohazard prevention and control.

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备注/Memo

备注/Memo:
收稿日期(Received date):2019-02-23; 改回日期(Accepted date): 2019-08-27
基金项目(Foundation item):国家自然科学基金(41861134008,41402272); 云南省应用基础研究计划项目(2015FB122); 云南省省级人培项目(KKSY201421016); 云南省教育厅科学研究基金重点项目(2014Z031)。[National Natural Science Foundation of China(41861134008, 41402272); Yunnan Applied Basic Research Program(2015FB122); Yunnan Provincial Personnel Training Program(KKSY201421016); Key Project of Scientific Research Foundation of Yunnan Education Department(2014Z031)]
作者简介(Biography):陈志(1980-),男,博士研究生,主要从事水土保持与地质灾害研究。[CHEN Zhi,(1980-), male, Ph.D. candidate, mainly research on soil and water conservation and geological hazards] E-mail:chenzhi1934@163.com.
更新日期/Last Update: 2019-07-30