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[III-205] Tunnel supplementary construction method and a strange document, measure artisan in the bad natural ground area

〇Hiroto Yamanaka¹, Syunsuke Miyagawa¹, Toshihiro Otake¹, Katsuhiro Abe² (1.OBAYASHI CORPORATION, 2.Ministry of Land, Infrastructure, Transport and Tourism)

Keywords:Talus material, Natural ground improved effect, Mine mouth change of location, hikikomi sinking, Leg sinking