RESEARCH ON ABRASION OF DEBRIS FLOW TO HIGH-SPEED DRAINAGE STRUCTURE

Applied Mathematics and Mechanics (English Edition) ›› 2004, Vol. 25 ›› Issue (11): 1257-1264.

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RESEARCH ON ABRASION OF DEBRIS FLOW TO HIGH-SPEED DRAINAGE STRUCTURE

CHEN Hong-kai^1,2, TANG Hong-mei¹, WU Si-fei¹

1. Institute of Geotechnical Engineering, Chongqing Jiaotong University, Chongqing 400074, P. R. China;
2. Key Laboratory for the Exploitation of Southwestern Resources & Environmental Disaster Control Engineering of Ministry of Education, Chongqing University, Chongqing 400044, P. R. China

Received:2003-10-21 Revised:2004-07-31 Online:2004-11-18 Published:2004-11-18

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 mechanism includes both abrasion mechanism of homogeneous sizing and shearing mechanism of particle of debris flow to high-speed drainage trough 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 trough 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.

2010 MSC Number:

CHEN Hong-kai;TANG Hong-mei;WU Si-fei. RESEARCH ON ABRASION OF DEBRIS FLOW TO HIGH-SPEED DRAINAGE STRUCTURE. Applied Mathematics and Mechanics (English Edition), 2004, 25(11): 1257-1264.

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References

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RESEARCH ON ABRASION OF DEBRIS FLOW TO HIGH-SPEED DRAINAGE STRUCTURE

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