IMHE OpenIR  > 山地灾害与地表过程重点实验室
Alternative TitleExperimental Investigation on the Inner Distribution of Debris Flow Velocity
陈华勇; 胡凯衡; 崔鹏; 周公旦
Corresponding Author胡凯衡
Source Publication四川大学学报( 工程科学版)


Other Abstract

Velocity in debris flow is one of the most important parameters for dynamic analysis and design of debris flow control works.In order to investigate the velocity profile along flow depth for particle phase and liquid phase in debris flows,the mixture of two organic liquids of Acrylic acid Polymers and ethyl acetate was used to monitor the high viscosity of debris flow.The glass beads with uniform particle size were used as solid phase in debris flows.Both particle and liquid velocity components were investigated by particle image velocimetry (PIV) measurement system under the condition of sediment flows and debris flows,respectively.The Takahashi model for the particle velocity distribution in debris flows was employed to calibrate the experimental results obtained by former researchers and measured by PIV measurement system in the experiments. The results indicated that the mixture liquid with higher viscosity produces a more uniform distribution of the particles along the flow depth.The experimental data measured by PIV system are in good agreement with the ones calculated by Takahashi model in debris flows (u/u_s>0.3).However,the data did not match the formers'ones in sediment flows, which indicated that the shape of particle velocity profile along flow depth is mainly determined by the fluid viscosity and the uniformity of particles distributed in the flows.

Keyword泥石流 含砂水流 流速分布 Piv
Subject Area水利工程
Indexed ByEI ; CSCD ; 北大中文核心
Accession numberAccession number:20155001667140
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
陈华勇,胡凯衡,崔鹏,等. 泥石流内部流速分布规律试验研究[J]. 四川大学学报( 工程科学版),2015,47(6):77-84.
APA 陈华勇,胡凯衡,崔鹏,&周公旦.(2015).泥石流内部流速分布规律试验研究.四川大学学报( 工程科学版),47(6),77-84.
MLA 陈华勇,et al."泥石流内部流速分布规律试验研究".四川大学学报( 工程科学版) 47.6(2015):77-84.
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