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

• 论文 • 上一篇    下一篇

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

陈洪凯1,2, 唐红梅1, 吴四飞1   

  1. 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
  • 收稿日期:2003-10-21 修回日期:2004-07-31 出版日期:2004-11-18 发布日期:2004-11-18
  • 基金资助:

    the Key Science Fund of the Communications Ministry(95060233);the Talent Fund of the Communications Ministry(95050508);the National Key Fund of the 10th Five Year of China(2001 BA604A023)

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

CHEN Hong-kai1,2, TANG Hong-mei1, WU Si-fei1   

  1. 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

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摘要： 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.

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.

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