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Volume 13 (2003)
- Issue 4 Pages 203-
- Issue 3 Pages 137-
- Issue 2 Pages 70-
- Issue 1 Pages 5-
Volume 13, Issue 3
Displaying 1-4 of 4 articles from this issue
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Akihiko KUDOU, Makoto NISHIGAKI, Tsuyoshi TORII, Shouzou ASADA2003 Volume 13 Issue 3 Pages 137-151
Published: September 15, 2003
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSIn this research, the effect of hydraulic properties on the stability of rock-fill dam and the behavior of residual groundwater level during rapid drawdown are discussed. Long term field measuring results indicate. that residual pore pressure has not developed in the upstream rock zone. This tendency has continued for the past 24 years since the completion of the rock-fill dam. The results of numerical analysis of the behavior of residual groundwater level and evaluation of stability show that the saturated hydraulic conductivity of actual rock-fill material, unsaturated properties of rock-fill material and the dependency of permeability on hydraulic gradient (non-Darcy phenomenon) are important in the design of rock-fill dams.View full abstractDownload PDF (2028K) -
Tukasa NIKAIDO, Gen SAITO, Mitsunori FUJITA, Hirotoshi AOYAMA2003 Volume 13 Issue 3 Pages 152-162
Published: September 15, 2003
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSA bypass fishway, which detours dam reservoir, was proposed for downstream migrating of swimming fish at Pirika Dam. At the upstream end of the fishway, an inlet facility with a spillway was required to guide fish with the river water and return the excess water to the river. The main technical themes in the facility-plan were; i) to find an effective type of spillway for the intended function, and ii) to clarify design parameters to avoid misleading of the fish. Results of field experiment with the fish showed that canal-side-spillway with shallow overflow depth was the most effective type. Moreover, some design parameters related to the above-mentioned technical themes were clarified; such as appropriate overflow depth, shape of the side-spillway, and usage of lighting.View full abstractDownload PDF (9745K) -
Kenji TOKUDA, Yoshihisa TAKADA, Matsuo TSURUOKA, Hiroshi OOTA2003 Volume 13 Issue 3 Pages 163-171
Published: September 15, 2003
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThis paper reports the automated system for the construction equipment of dam-concrete, on which all equipments of concrete mixing, transportation and placement are totally controlled. This system has been developed and utilized in order to make the job of concrete-transportation from the mixing plant to the placing site more efficiently and safer, by the optimum-control technology and the information technology. And, it is applied to the construction site of the Takizawa Dam.View full abstractDownload PDF (6989K) -
Jyun TAKANO, Yukihide TASHIRO, Atsuaki GOMI, Minako EMOTO2003 Volume 13 Issue 3 Pages 172-176
Published: September 15, 2003
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSAn advanced construction controlling system for construction of fill dams has been developed and implemented in two projects: (1) the upper regulating reservoir of the Kyogoku Power Station sponsored by Hokkaido Electric Power Co., Inc. and (2) the upper dam of the Omarugawa Power Station sponsored by Kyushu Electric Power Co., Inc. This report presents the system based on an application of 3-dimensional CAD and information technology for construction of large-scale asphalt concrete faced fill dams having complex shapes. There has been a demand for a more efficient method of constructing such kind of dams, and through practical application in the two projects, the effectiveness of the newly developed system has been demonstrated for: (1) excavating and filling the embankments, roads and other structures; (2) laying out paving lanes for the asphalt concrete facing; and (3) testing the strength of bedrock.View full abstractDownload PDF (5216K)
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