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作者投稿 专家审稿 编辑办公 编委办公 主编办公

冰川冻土 ›› 2014, Vol. 36 ›› Issue (5): 1176-1183.doi: 10.7522/j.issn.1000-0240.2014.0140

• 寒区科学与技术 • 上一篇    下一篇


党超1,2, 褚娜娜1,2, 丁瑜1,2   

  1. 1. 三峡库区地质灾害教育部重点实验室, 湖北 宜昌 443002;
    2. 三峡大学 土木与建筑学院, 湖北 宜昌 443002
  • 收稿日期:2014-01-12 修回日期:2014-05-09 出版日期:2014-10-25 发布日期:2014-11-19
  • 作者简介:党超(1982-), 男, 山东滕州人, 讲师, 2009年在中国科学院成都山地灾害与环境研究所获博士学位, 现主要从事山地灾害形成机制的研究. E-mail:dangchao1982@126.com
  • 基金资助:

The critical condition for the formation of debris flow induced by glacial lake outburst flood

DANG Chao1,2, CHU Nana1,2, DING Yu1,2   

  1. 1. Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, Yichang 443002, Hubei, China;
    2. College of Civil Engineering &Architecture, Three Gorge University, Yichang 443002, Hubei, China
  • Received:2014-01-12 Revised:2014-05-09 Online:2014-10-25 Published:2014-11-19

摘要: 随着全球气候的变暖, 在世界上许多高山峡谷区的冰湖溃决及其溃决洪水引发的泥石流, 经常对下游居民及其他基础设施造成极为严重的危害. 使用水槽试验的方法, 从单宽流量和库容、沟道纵坡、堆积物粒径3个方面探讨了冰湖溃决泥石流形成的影响因素和临界条件. 结果显示: 冰湖溃决泥石流形成与否不仅与溃决洪水提供的能量有关, 还与参与泥石流活动的沟床物质特性紧密相关. 通过对试验数据的分析, 当泥石流形成的特征参数K>2.66时, 冰湖溃决洪水可以演化为泥石流. 该种方法可以对危险性冰湖的预测提供理论参考.

关键词: 冰湖溃决洪水, 泥石流, 试验, 临界条件

Abstract: Along with the glacier retreating due to global warming, many cases of glacier lakes outburst and consequent debris flows occurred in alpine areas, which typically resulted in great harms to inhabitant and other downstream infrastructures. Base on flume tests, considering the different combination of unit discharge, reservoir capacity and sediment grain size, the formation of critical conditions and influential factors of debris flow due to glacier lake outburst floods (GLOFs) were studied herein. It is found that whether debris flows be formed or not depend on the capacity of GLOFs and the features of materials in the channel. Analyzing the data obtained from the flume tests reveals that the GLOFs could evolve to debris flow when the parameter K>2.66. The method presented herein could provide theoretical foundation for risk assessment of dangerous glacier lake.

Key words: glacier lake outburst flood, debris flow, experiment, critical condition


  • P642.23