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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Communicated by DAI Shi-qian
Foundation items: 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 (2001BA604A023)
Biography: CHEN Hong-kai (1964∼)
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Hong-kai, C., Hong-mei, T. & Si-fei, W. Research on abrasion of debris flow to high-speed drainage structure. Appl Math Mech 25, 1257–1264 (2004). https://doi.org/10.1007/BF02438281
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DOI: https://doi.org/10.1007/BF02438281