[1]铁永波.基于流速衰减特征的泥石流冲出距离预测方法[J].山地学报,2012,(02):216.
　TIE Yongbo.Debris Flow Run Out Distance Prediction Based on the Velocity Decreasing Coefficient[J].Mountain Research,2012,(02):216.
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基于流速衰减特征的泥石流冲出距离预测方法()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2012年02期
页码:
216
栏目:
山地学报
出版日期:
2012-01-01

文章信息/Info

Title:
Debris Flow Run Out Distance Prediction Based on the Velocity Decreasing Coefficient
作者:
铁永波;
成都地质矿产研究所，四川 成都 610081
Author(s):
TIE Yongbo
Chengdu Institute of Geology and Mineral Resources, Chengdu 610081,China
关键词:
泥石流; 流速衰减系数; 冲出距离; 预测方法
Keywords:
debris flow;  velocity attenuation coefficient;  run out distance;  prediction method
分类号:
P642.23
文献标志码:
A
摘要:
泥石流冲出距离的确定是泥石流灾害评价及防治中的关键环节。基于泥石流在堆积区流速的变化特征,提出了泥石流流速"衰减系数"的概念。通过对泥石流流速衰减系数的定义和计算公式的推导,提出了一种基于泥石流流速衰减系数来确定泥石流冲出距离的新方法,并以四川省泸定县干沟泥石流为实例进行计算和验证。研究结果表明:当干沟泥石流在堆积区的流速大于初始(沟口)流速的15%时,流速的衰减程度极为显著;而当堆积区流速小于初始速度的15%时,流速的衰减极为缓慢。研究结果对泥石流灾害的危险性评价及防灾减灾具有一定的理论和实践意义。
Abstract:
The prediction of debrisflow rum out distance is crucial to it’s hazards assessment and mitigation planning. Based on the phenomenon of debris flow velocity decreasing in inundate area, this paper give the general idea of attenuation coefficient. After the definition interpreting and the formula constructing of attenuation coefficient, this paper put forward a method to debris flow run out distance prediction based on the definition of velocity attenuation coefficient. Finally, take Gangou debris flow which locate in Luding country (Sichuan province) as an example to calculating it’s run out distance. The result show that when the velocity of debris flow is higher than 15% of beginning velocity, the decreasing degree of debris flow velocity is obvious, and when the velocity of debris flow is lower than 15% of beginning velocity, the decreasing degree of debris flow velocity is slow. This research is significance to debris flow hazards assessment and mitigation.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2011-08-30；改回日期(Accepted) : 2011-12-29。
基金项目（Foundation item）：国家自然科学基金（41101086）、地质灾害防治国家重点实验室开放基金（SKLGP2012K004）及中国地质调查局项目（1212011014017）资助。\[Supported by the Natural Science Foundation of China(41101086), Special?Research Fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(Chengdu University of Technology) (SKLGP2012K004) and the research project from CSGS(1212011014017).\]
作者简介（Biography）：铁永波（1979－），男，博士，副研究员，主要从事环境地质和灾害地貌方向研究。\[Tie Yongbo (1979-)，male，Dr. Associate Researcher, majoring in environmental geology and geomorphologic disasters research.\] E-mail: tyongbo@cgs.cn
更新日期/Last Update: 1900-01-01