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基于小波分析的泥石流冲击力信号处理
Alternative TitleDebris Flow Impact Pressure Signal Processing by the Wavelet Analysis
唐金波; 胡凯衡; 周公旦; 陈华勇; 朱兴华; 马超
Corresponding Author胡凯衡
2013-01
Source Publication四川大学学报( 工程科学版)
Volume45Issue:1Pages:8-13
Abstract对于防治工程的设计,泥石流冲击力是一个很重要的参数,其冲击力的大小要准确地进行估计是很困难的,并且由于泥石流的破坏性很强,很难在野外进行冲击力的测量。为了减小模型尺度带来的影响,利用大型水槽进行泥石流冲击力实验,并对得到的冲击力信号进行小波降噪处理。通过比较降噪后重构的信号及降噪后的信号发现,降噪后的泥石流冲击力信号可作为液相浆体的冲击力过程线。对采集到的泥石流冲击力数据分析后发现,泥石流液相浆体的冲击力计算公式p = Kρf v2 中的系数K 接近于0. 5。
Other AbstractFor the prevention and control of engineering design,the magnitude of debris flow impact force is a very important parameter and is difficult to be estimated and measured in the field. To reduce the influence of model scale,debris flow impact force experiment was carried out by large flume and the wavelet analysis was used to de-noise the debris flow impact signal. The results showed that the de-noised debris flow impact signal could be impact pressure of liquid phase slurry by comparing the reconstructed signal with de-noised
signal. The analysis of debris flow impact pressure experiment data showed that the coefficient approaches 0. 5 in the debris flow impact pressure formula p = Kρf v2 .
Keyword泥石流 冲击力 小波分析 信号降噪
Subject Area灾害学
Indexed ByEI ; CSCD
Language中文
CSCD IDCSCD:4769844
Funding Organization国家重点基础研究发展计划资助项目( 2011CB409902) ; 中国科学院重点部署项目
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6544
Collection山地灾害与地表过程重点实验室
Recommended Citation
GB/T 7714
唐金波,胡凯衡,周公旦,等. 基于小波分析的泥石流冲击力信号处理[J]. 四川大学学报( 工程科学版),2013,45(1):8-13.
APA 唐金波,胡凯衡,周公旦,陈华勇,朱兴华,&马超.(2013).基于小波分析的泥石流冲击力信号处理.四川大学学报( 工程科学版),45(1),8-13.
MLA 唐金波,et al."基于小波分析的泥石流冲击力信号处理".四川大学学报( 工程科学版) 45.1(2013):8-13.
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