PREVENTION OF LIQUEFACTION AND EROSION OF BACKFILL BEHIND THE QUAY WALL USING NEW SOLUTION TYPE GROUT

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  • HAYASHI Kentaro
    社団法人 土木学会 五洋建設株式会社技術研究所 開発課
  • ZEN Kouki
    社団法人 土木学会 九州大学大学院工学研究院
  • YAMAZAKI Hiroyuki
    社団法人 土木学会 独立行政法人港湾空港技術研究所地盤・構造部

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  • 溶液型薬液注入工法による既設岸壁背後地盤の液状化および吸出し対策
  • ヨウエキガタ ヤクエキ チュウニュウ コウホウ ニ ヨル キセツ ガンペキ ハイゴ ジバン ノ エキジョウカ オヨビ スイダシ タイサク

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In this paper, the workability and the effectiveness of the new grouting method as countermeasure against liquefaction and erosion is studied. The stiffness of the improved sand against liquefaction and erosion, and the workability under the large changes of residual water level, and countermeasure against the leak of the grout from the damaged retaining geotextile are extensively examined through laboratory and field tests data. The results of these tests data indicate that this new grouting method is useful enough for the countermeasure against liquefaction and erosion for the back fill of the quay wall.

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