Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (4): 1155-1163.doi: 10.13278/j.cnki.jjuese.201504201

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Prediction on the Hazardous Extent of the Secondary Debris Flow Induced by Volcanic Disaster of Changbai Moutains

Xu Peihua1, Yuan Zhongfan1, Li Guangjie1, Li Guang1, Du Wenhao1, Wang Yuehua2   

  1. 1. Construction Engineering College, Jilin University, Changchun 130026, China;
    2. Zhejiang Institute of Hydraulics and Estuary, Hangzhou 310020, China
  • Received:2014-11-26 Published:2015-07-26

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Abstract:

Using FLOW-3D software, basing on the field geological investigation and parameters obtained from indoor simulation, the authors simulated occurrence and development process of a special flood like debris flows which caused by Changbai Mountain volcanic eruption.The process of occurrence can be described as a sudden heavy overflow of a volcanic lake water carrying a large volume loose debris (volcanic lahars deposits) through Tianchi gap quickly rushing down along the north slope.We simulated the influence of the debris flow to Erdaobaihe Town and drew the following conclusions:Under the condition of the debris flow volume of 3.027 billion m3, the town will be completely submerged by mudslides;no matter what kind of debris flow volume,Erdaobaihe Town will be eliminated by a debris flow once the volcano erupt,the escape time is only 30 to 42 minutes for the residents in the town.

Key words: volcanic disaster, the secondary debris flow, Erdaobaihe Town, FLOW-3D

CLC Number: 

  • P642.23

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