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老朽化フィルダムにおける固化処理した底泥土を用いた堤体改修の設計法 Design Method to Reinforce Old Fill-dam Embankment Using Cement-mixed Muddy Soil 谷, 茂 タニ, シゲル TANI, Shigeru 福島, 伸二 フクシマ, シンジ FUKUSHIMA, Shinji 北島, 明 キタジマ, アキラ KITAJIMA, Akira 西本, 浩司 ニシモト, コウジ NISHIMOTO, Kohji フィルダム 堤体補強 底泥土 固化処理土 傾斜コアゾーン ゾーニング 設計法 Most of old fill-dams were mostly accumulated with the muddy soil that caused the water pollution and the loss of water capacity. In order to make efficient use of the muddy soil as the embankment soil for reinforcing the damaged embankment, we have developed a new method to repair the old small earth dam embankment by means of the cement-stabilized muddy soil. This repairing method is applicable to the reinforcement of the fill-dam embankment (H≧15m) larger than the small earth dam embankment (H＜15m). In this paper, we propose the design method to reinforce the old fill-dam embankment by constructing the sloping core and shell zones by cement-mixed muddy soil. The strength parameters (c',φ') by tri-axial compression test is adopted to evaluate the stability of the reinforced embankment slope that compose of the existing embankment and sloping zones constructed by cement-mixed muddy soil in this design method. 独立行政法人 農業・生物系特定産業技術研究機構 農村工学研究所 2006-03-01 jpn departmental bulletin paper VoR https://doi.org/10.24514/00002129 https://repository.naro.go.jp/records/2228 10.24514/00002129 10.24514/00002129 1882-3262 農村工学研究所報告 Bulletin of the NARO, Rural Engineering 45 1 19 https://repository.naro.go.jp/record/2228/files/nkk_report_No45p1-19p.pdf application/pdf 1.1 MB 2019-03-20