节点文献

藏东南典型冰湖溃决危险性分析

Analysis on Risk of Glacier-Lake Outburst in Southeastern Tibet

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 刘建康程尊兰郭芬芬徐伟

【Author】 Liu Jiankang1,2,3,Cheng Zunlan1,2,Guo Fenfen2,3 and Xu Wei2,3 (1.Key Lab of Mountain Hazards and Surface Processes,Chinese Academy of Sciences,Chengdu 610041,China;2.Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,China;3.Graduated University of Chinese Academy of Science,Beijing 100049,China)

【机构】 中国科学院地表过程与动力学重点实验室中国科学院成都山地灾害与环境研究所中国科学院研究生院

【摘要】 自川藏公路南线(西藏境内)修建通车以来,因受到泥石流、滑坡崩塌等自然灾害的影响而经常出现交通被迫中断的现象。其中,冰湖溃决泥石流由于其突发性强、洪峰高、流量大、破坏性强、持续时间短、范围广等特点,已成为藏东南地区危害程度最为严重的特殊灾种。通过对错下湖区域水文气候、冰川活动以及地震等要素的分析,初步认为该冰湖存在可能溃决的危险;通过终碛堤1/3和1/2溃决模式进行计算,得到溃决洪峰流量分别为2 236 m3/s和3 697 m3/s。错下湖一旦溃决,洪水汇入帕隆臧布江时将淹没以至冲毁沟口段公路、桥梁等基础设施,同时,主河还将面临泥石流堵江的危险。

【Abstract】 Since construction and opening to traffic,traffic interruptions occur often along the southern line of Sichuan-Tibet highway(in Tibet) due to hazards like debris flow and landslides.Debris flows caused by glacier-lake outburst have become the most serious disasters with the characteristics of unexpected occurrence,high flood peak,great discharge,destructive, short time duration and broad range.Based on analysis on important factors as hydrological climate,glacier movement and earthquake records,etc. in Cuoxiahu area,the glacier-lake is preliminarily proved to be in danger of outburst.Outburst peak flows are obtained respectively as 2 236m3/s and 3 697m3/s by calculation in the mode of 1/3 and 1/2 dam break.Once the outburst of the lake happen,infrastructure such as roads,bridges along the Parlung Tsangpo River would be washed off,even worse,the main river also faces the danger of being blocked by debris flows.

【基金】 国家自然科学基金(40771024);国家科技支撑计划专题项目(2008BAKSOB04-5)
  • 【文献出处】 灾害学 ,Journal of Catastrophology , 编辑部邮箱 ,2011年02期
  • 【分类号】P642.23
  • 【被引频次】14
  • 【下载频次】343
节点文献中: 

本文链接的文献网络图示:

本文的引文网络