长白山火山次生泥石流灾害危险范围预测

doi:10.13278/j.cnki.jjuese.201504201

吉林大学学报(地球科学版) ›› 2015, Vol. 45 ›› Issue (4): 1155-1163.doi: 10.13278/j.cnki.jjuese.201504201

长白山火山次生泥石流灾害危险范围预测

徐佩华¹, 袁中凡¹, 李广杰¹, 李光¹, 杜文浩¹, 王月华²

1. 吉林大学建设工程学院, 长春 130026;
2. 浙江省水利河口研究院, 杭州 310020

收稿日期:2014-11-26 发布日期:2015-07-26
作者简介:徐佩华(1979),女,副教授,博士,主要从事地质灾害与环境评价研究、教学工作,E-mail:xuph@jlu.edu.cn.
基金资助:
国土资源部公益性项目(201211095-6)

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. 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

摘要/Abstract

摘要：

长白山火山次生泥石流是由长白山火山喷发引起的火口湖中的水沿长白山北坡缺口,以类似水库溃坝的形式突然溢出而形成的短时间、大体积的水流,是携带着地表的松散堆积物,沿着沟谷和山坡向下快速流动的一种类似洪流的特殊泥石流.笔者在野外地质调查和室内模拟试验的基础之上,采用FLOW-3D数值模拟软件,对长白山火山喷发引起的次生泥石流灾害进行大范围的数值模拟,并着重研究其对二道白河镇地区的影响程度,旨在为政府决策和防灾提供依据.结果表明:泥石流总体积为30.27亿m³时,二道白河镇将完全被泥石流淹没;不论哪种泥石流体积假设情况,泥石流都将到达二道白河镇,并对其造成危害;一旦火山爆发,二道白河镇居民可逃生时间只有30~42 min.

关键词: 火山灾害, 次生泥石流, 二道白河镇, FLOW-3D

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

中图分类号:

P642.23

徐佩华, 袁中凡, 李广杰, 李光, 杜文浩, 王月华. 长白山火山次生泥石流灾害危险范围预测[J]. 吉林大学学报(地球科学版), 2015, 45(4): 1155-1163.

Xu Peihua, Yuan Zhongfan, Li Guangjie, Li Guang, Du Wenhao, Wang Yuehua. Prediction on the Hazardous Extent of the Secondary Debris Flow Induced by Volcanic Disaster of Changbai Moutains[J]. Journal of Jilin University(Earth Science Edition), 2015, 45(4): 1155-1163.

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长白山火山次生泥石流灾害危险范围预测

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

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