Journal of Japan Society of Dam Engineers
Online ISSN : 1880-8220
Print ISSN : 0917-3145
ISSN-L : 0917-3145
Search
Advanced search
OR
Browse
Search
Volume 10, Issue 1
Displaying 1-6 of 6 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • Measures for Environmental Conservation in Dam Projects (Part 1)
    Toshiyuki ADACHI
    2000 Volume 10 Issue 1 Pages 5-14
    Published: March 15, 2000
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11315/jsde1991.10.5
    JOURNAL FREE ACCESS
    Download PDF (4024K)
  • OPENING DIMENSION FOR SELECTIVE INTAKE IN RESERVOIRS
    Hiroshi TERATA
    2000 Volume 10 Issue 1 Pages 15-25
    Published: March 15, 2000
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11315/jsde1991.10.15
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The procedure to find a proper opening dimension for the selective intakes based upon Hino-Onishi's selective withdrawal theory for axisymmetric flow in continuously stratified fluid is modified by the experimental procedure and applied to the withdrawal from reservoir surface layer which consists of a top layer of approximately homogeneous density and a thermocline layer which is located under the top layer and is continuously stratified. The critical values of the modified densimetric Froude number calculated for withdrawal from reservoir surface layer are graphically compared to the values obtained through Kawahara's formulas and Kawai-Matsumoto's model experiments for withdrawal from a two-layered fluid. A method to estimate the withdrawal efficiency of warm water in the top layer is presented.
    View full abstract
    Download PDF (2671K)
  • Imcompressible Hyperelastic Analysis of Rubber Seal for Hydraulic-Gates
    Aiko KIKUCHI, Hachiro SHIBUYA, Takashi ONISHI
    2000 Volume 10 Issue 1 Pages 26-32
    Published: March 15, 2000
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11315/jsde1991.10.26
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The hyperelastic nonlinear analysis is an effective method to study rubber seal of hydraulic gates, where generally experimental studies need expensive rubber moulds. The accuracy and stability of the calculation for nonlinear structure analyses are frequently affected by parameters in the model. We introduced adaptive control method for the hyperelastic analysis system in which several parameters are modified by the fuzzy logic, and as an example, the presented method is succesfully applied to P-shaped rubber seal.
    View full abstract
    Download PDF (2119K)
  • Measured Condition and Numerical Analyses of Residual Pore Pressure in Landslides around Dam Reservoir
    Ryosuke TSUNAKI
    2000 Volume 10 Issue 1 Pages 33-41
    Published: March 15, 2000
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11315/jsde1991.10.33
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Estimation of residual porepressure during reservoir drawdown plays a very important role for design of prevention works against landslides around dam reservoir. However, few papers on residual porepressure are reported based on measured data obtained from several sites. Therefore, the author collected such data from many landslides around dam reservoir and analysed condition of residual porepressure during reservoir drawdown. At the same time, analyses were carried out to simulate relation between reservoir drawdown and groundwater table fluctuation in boreholes. As a result, relatively good correspondence was obtained between measured and calculated value.
    View full abstract
    Download PDF (2753K)
  • Development of Concrete Transportation Method for Dam Construction and Evaluation of The Method
    Yoichi FUKUMOTO, Hiroshi SHIMADA, Shoji IKEDA
    2000 Volume 10 Issue 1 Pages 42-55
    Published: March 15, 2000
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11315/jsde1991.10.42
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Due to the spread of the full-layer placing method in dam construction, concrete transportation methods are diversifying. With consideration of such circumstances, a concrete transportation method has been developed newly. Compared to existing methods, it has the advantage of being more environmentally desirable in setting up. The method was evaluated quantitatively through comparison with existing methods, and its possibility was considered as a optional method.
    View full abstract
    Download PDF (4571K)
  • Elastic Wave Velocity of Hardened Cement Grouts
    Yoshikazu YAMAGUCHI, Shigeki YAMAMOTO, Yoshihiro ABE
    2000 Volume 10 Issue 1 Pages 56-63
    Published: March 15, 2000
    Released on J-STAGE: April 30, 2010
    DOIhttps://doi.org/10.11315/jsde1991.10.56
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The rationalization of evaluation of dam foundation grouting effects using seismic tomography has been studied enthusiastically. The change of seismic wave velocity of hardened cement grouts due to press filtration and age should be considered in order to analyze the results of seismic tomography quantitatively. After the change of wet density of cement grouts is evaluated using the press filtration test, the seismic wave velocity of hardened cement grouts is measured, varying their wet density and age. Test results are reported and the discussion on quantitative evaluation of the results of seismic tomography is made.
    View full abstract
    Download PDF (1745K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top