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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 49号
  1. 部局別インデックス
  2. 農学部

カンジン地下ダムの連続壁体の工学的性状

http://hdl.handle.net/20.500.12000/3626
http://hdl.handle.net/20.500.12000/3626
f313f099-5288-4961-9d69-f3440f6867ce
名前 / ファイル ライセンス アクション
KJ00000162640.pdf KJ00000162640.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル カンジン地下ダムの連続壁体の工学的性状
言語 ja
作成者 宮城, 調勝

× 宮城, 調勝

ja 宮城, 調勝

小宮, 康明

× 小宮, 康明

ja 小宮, 康明

神谷, 嘉明

× 神谷, 嘉明

ja 神谷, 嘉明

Miyagi, Norikatsu

× Miyagi, Norikatsu

en Miyagi, Norikatsu

Komiya, Yasuaki

× Komiya, Yasuaki

en Komiya, Yasuaki

Kamiya, Yoshiaki

× Kamiya, Yoshiaki

en Kamiya, Yoshiaki

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
主題
言語 ja
主題Scheme Other
主題 地下ダム
言語 ja
主題Scheme Other
主題 連続壁体
言語 ja
主題Scheme Other
主題 原位置土攪拌工法
言語 ja
主題Scheme Other
主題 ソイルセメント
言語 ja
主題Scheme Other
主題 遮水性
言語 ja
主題Scheme Other
主題 圧縮強度
内容記述
内容記述タイプ Other
内容記述 久米島で建設中のカンジン地下ダムの連壁から採取したボーリングコアについて,湿潤密度,乾燥密度,含水比,透水係数,圧縮強度などを測定し,連壁の工学的性状について調べた。透水係数と圧縮強度は施行管理基準をおおむね満足するものであった。しかしながら,連壁の性状は不均質であり,深さ方向に大きく変動していることが明らかになった。この主な原因は原位置土攪拌工法によるソイルセメントの施工中に生じる材料分離や地下水の混入であることが推察された。均質な連壁を施行するためには,いろいろな条件を満たす必要があるが,まず,材料分離を起さない配合としなければならい。実験によれば,材料分離をおこさないためのW/Cの値は60程度である。しかし,このW/Cの値は施行機械によってかなり厳しい条件であり,仮にこの条件で施行が可能としても,削孔中の地下水の出入りを制御することは困難である。したがって,現行の原位置土攪拌工法によって均質な連壁を施行するのは不可能である。また,ここでは論じていないが,この工法には幾つかの問題点もあげられる。これについては別の機会に報告したい。
内容記述タイプ Other
内容記述 The continuous underground wall of Kanjin underground dam is carrying out the construction by using SMW method (soil mixing wall method) in Kumejima Island. On many boring core samples collected from the continuous underground wall, wet density, dry density, water content, permeability and compressive strength were measured, and it was clarified on the engineering properties. As the result, the high value was almost shown from each construction management value in both of compressive strength and permeability. However, the property of the continuous underground wall was very heterogeneous, and greatly fluctuating in the depth direction. It was guessed that this causes were material separation and contamination of the groundwater which mainly occurs under construction of soil cement by SMW method.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/3626
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 49, p. 151-157
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