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基于动量守恒的粘性泥石流冲击力计算
Alternative TitleIm pact force calculation of viSCOHS debris flow based momentum conservatiOil
张宇; 韦方强; 王青
Corresponding Author张宇
2006
Source Publication泥沙研究
Issue3Pages:23-26
Abstract目前针对泥石流冲击压力的计算公式均假定泥石流体为连续流体。粘性泥石流的主要流动形式为阵流,其流速和密度的变化规律,目前尚未清楚,采用现有公式误差较大。本文基于动量守恒原理,引入泥石流体微元概念,推导出泥石流冲击力计算公式;采用Hilbert变换这种数字滤波方法对实测的冲击作用信息进行信号处理后,计算出公式所需参量。
Other AbstractAt present,several formulas of impact load about debris flow in common use are based on the hypothesis
that debris flow iS continuous flow.Because the viscous debris flow behaves mainly discontinuous and the variab ility
ab out velocity and density of debris flow is uncertain, there is a quite big discrepany by using present formulas to
calculate impact load of the viscous debris flow.In this paper,a concept of debris flow micro-cell Was introduced
and a new form ula of impact load ab out viscous debris flow was deducted based on momentum conservation.Besides
the authors deal with the measured impact load inform ation by Hilbert transform to obtain necessary parametem for
the calculation of the proposed form ula.
Keyword动量守恒 粘性泥石流 冲击力
Language中文
Funding Organization国家自然科学基金(40201009);国家自然科学基金重大研究项目(90202007);中国科学院成都山地灾害与环境研究所引进人才资助项目
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/1592
Collection成都山地所知识仓储(2009年以前)
山地灾害与地表过程重点实验室
人事与人才处研究生部
Recommended Citation
GB/T 7714
张宇,韦方强,王青. 基于动量守恒的粘性泥石流冲击力计算[J]. 泥沙研究,2006(3):23-26.
APA 张宇,韦方强,&王青.(2006).基于动量守恒的粘性泥石流冲击力计算.泥沙研究(3),23-26.
MLA 张宇,et al."基于动量守恒的粘性泥石流冲击力计算".泥沙研究 .3(2006):23-26.
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