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瑞浪超深地層研究所研究坑道掘削工事; 換気立坑における湧水対策の現状

Construction work of Mizunami Underground Research Laboratory; The Present condition of water inflow control measure into Ventilation Shaft

原 雅人; 見掛 信一郎 ; 池田 幸喜

Hara, Masato; Mikake, Shinichiro; Ikeda, Koki

換気立坑の湧水対策として、深度200mから220m間のプレグラウチングを実施し、その湧水抑制効果を確認した。

Pregrauting between 220m from 200m in depth of ventilation shaft was executed as a water inflow measures, and the water controlling effect was confirmed.

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