Journal of Japan Society of Dam Engineers
Online ISSN : 1880-8220
Print ISSN : 0917-3145
ISSN-L : 0917-3145
Volume 18, Issue 4
Displaying 1-3 of 3 articles from this issue
  • Josuke KASHIWAI
    2008 Volume 18 Issue 4 Pages 239-250
    Published: December 15, 2008
    Released on J-STAGE: April 24, 2009
    JOURNAL FREE ACCESS
    Observed relationship between SS and power of discharge rate is usually used for the inflow conditions of turbid water simulation in a reservoir. The observation is sometimes executed at the different site from the required point, which can occur by the change of the site after the observation etc. There, however, is no knowledge for the judgment of the application of observed data or methods for the application. This report shows the conditions for the application of observed data and methods for application at that case, through analysis and examination of the change of coefficients by the confluence of flows.
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  • Tatsuro SAKURAI, Hiroo SHIOJIRI, Junichi SUZUMURA
    2008 Volume 18 Issue 4 Pages 263-273
    Published: December 15, 2008
    Released on J-STAGE: April 24, 2009
    JOURNAL FREE ACCESS
    Little study has been done, so far, on hydraudynamic pressure in duct within rock during severe earthquake. In this paper, the effects of duct-rock interaction on hydraudynamic pressure within duct are studied using simple model. Kinematic interaction effect, kinetic interaction effect, as well as the effect of reflection at the end of duct are examined, and the importance of kinematic interaction and material damping of rock are pointed out.
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