Research on Abrasion of Debris Flow to High-Speed Drainage Structure

CHEN Hong-kai; TANG Hong-mei; WU Si-fei

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CHEN Hong-kai, TANG Hong-mei, WU Si-fei. Research on Abrasion of Debris Flow to High-Speed Drainage Structure[J]. Applied Mathematics and Mechanics, 2004, 25(11): 1150-1156.

Citation:

CHEN Hong-kai, TANG Hong-mei, WU Si-fei. Research on Abrasion of Debris Flow to High-Speed Drainage Structure[J]. Applied Mathematics and Mechanics, 2004, 25(11): 1150-1156.

Citation:

CHEN Hong-kai, TANG Hong-mei, WU Si-fei. Research on Abrasion of Debris Flow to High-Speed Drainage Structure[J]. Applied Mathematics and Mechanics, 2004, 25(11): 1150-1156.

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Research on Abrasion of Debris Flow to High-Speed Drainage Structure

1.
Institute of Geotechnical Engineering, Chongqing Jiaotong Unviersity, Chongqing 400074, P. R. China;

Received Date: 2003-10-21
Rev Recd Date: 2004-07-31
Publish Date: 2004-11-15

Abstract

Abstract

As one weak topic in research of debris flow, abrasion of debris flow shortens obviously application life of control structure composed of concrete. High-speed drainage structure, one of the most effective techniques to control giant debris flow disaster, has shortened one-third application life due to abrasion by debris flow. Based on velocity calculation method founded by two-phase theory, research of abrasion mechanism of debris flow to high-speed drainage structure was made. the mechanisms includes both abrasion mechanism of homogeneous sizing and shearing mechanism of particle of debris flow to high-speed drainage through structure. Further abrasion equations of both sizing and particle were established by Newton movement theory of debris flow. And abrasion amount formula of the high-speed drainage through structure is set up by dimensional analysis. Amount to calculating in the formula is consistent with testing data in-situ, which is valuable in design of high-speed drainage structure.
- debris flow,
- two-phase liquid,
- high-speed drainage structure,
- abrasion,
- abrasion amount

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References(18)

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