[1]党超,程尊兰,刘晶晶,等.泥石流堵塞主河条件[J].山地学报,2009,(05):557.
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泥石流堵塞主河条件()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2009年05期
页码:
557
栏目:
山地学报
出版日期:
2009-09-15

文章信息/Info

作者:
党超;程尊兰;刘晶晶;
中国科学院地表过程与动力学重点试验室;中国科学院水利部成都山地灾害与环境研究所;中国科学院研究生院;
关键词:
泥石流主河堵塞堵河判别指数
文献标志码:
A
摘要:
分析了泥石流堵河的主要影响因素,包括泥石流与主河流量比,泥石流与主河交汇角,主河宽度,泥石流体的抗冲强度和主河底床坡度。通过对这些主要因素的分析和对比,将这5个主要因素简化为4个无量纲量。针对这些无量纲参数进行了一系列的泥石流堵塞主河试验。对比本次研究和其他文献关于泥石流堵河试验的变量和结果,可以得出无量纲化的泥石流堵塞主河的临界条件。实验结果表明,泥石流堵河的临界值C≥0.87,而且当流量比小于1时难以形成堵河现象。用该堵塞主河的条件能正确判断许多原型泥石流堵塞主河事件。

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更新日期/Last Update: 2009-09-15