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泥石流的规模-频率关系
Alternative TitleMagnitude-Frequency Relations in Debris Flow
Language中文
刘晶晶; 程尊兰; 李泳
Corresponding Author刘晶晶
2006
Source Publication第五届海峡两岸灾害与环境保育会 ; 第五届海峡两岸灾害与环境保育会会议论文集
Pages169-172
Conference Date2006.7
Conference Place云南东川
Funding Organization中国科学院水利部成都山地灾害与环境研究所和中国水土保持学会
Abstract在泥石流危险度评价中,泥石流的规模和频率通常被视为最重要的两个特征因子,但在区域性的研究中,两者之间的关系并没有充分地表现出来。本文利用大量数据,对流域面积、流量、径流量这三个最能反映泥石流规模的参数,进行统计分析,定量揭示了其规模-频率关系。结果表明,尽管频率虽规模的增大而减小,但在定量上存在显著的区域性差异和不同事件之间的差异。说明不能仅通过特征参数的简单组合对泥石流事件进行评价。
Other AbstractMagnitude-frequency relations are of the most importance in in the assessment of the debris flow. In this paper, employing numerous data of field survey and observation, we present these relations in terms of valley area, discharge, and runoff. Statistics on more than 5000 debris flow valleys shows that the area decreases in manner of the power form with exponent varying with the regions from east to west in China. That is, the frequency of debris flow decreases with the valley area increases in a power form. And observations of debris flows in Jiangjiagou allow a systematic survey of distribution of discharge and runoff. Results show that both these parameters are subject to the exponential distribution, with exponent varying with the events, which can be thought of as representing various processes of debris flow. These numerically determined relationships, although in statistic sense, might provide a quantitative reference to the assessment of debris flows.
Keyword泥石流 规模 频率
Indexed By其他
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10971
Collection山地灾害与地表过程重点实验室
Affiliation中国科学院水利部成都山地灾害与环境研究所,成都,610041
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
刘晶晶,程尊兰,李泳. 泥石流的规模-频率关系[C],2006:169-172.
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