Traversing Log Boom Degradation Mechanisms and Countermeasures

DOI

Bibliographic Information

Other Title
  • 横断式網場ネット部劣化メカニズムの解明と対策

Description

<p>Log boom is installed in dam reservoirs to prevent gate blockages and driftwood run-off. If the aging log boom is damaged and the driftwood trapping function is impaired, this will be a significant problem for dam safety management. However, the degradation mechanism still needs to be fully clarified. Therefore, in this study, field surveys and laboratory experiments were conducted to clarify the age-related deterioration mechanism of the net section. The results showed that the log boom was degraded by ultraviolet rays, driftwood contact, and contact with slopes and that the degradation factors differed according to the log boom arrangement. The probability of net breakage due to degradation was assumed to vary with the magnitude of the external force, and a method was proposed to determine the time when the net starts to break, taking into account the net degradation measures against abrasion and the assumed external force on the log boom area.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390585095041636352
  • DOI
    10.11315/jsde.35.5
  • ISSN
    18808220
    09173145
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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