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活断層調査坑道における水理調査

Investigation of the Hydraulic Properties in the Active Fault Survey Tunnel

竹村 友之*; 迫垣内 薫*; 高橋 英一郎*; 武部 晃充*; 中嶋 敏秀*; 山下 貢*; 山之内 浩文*

Takemura, Tomoyuki*; Sakogaichi, Kaoru*; Takahashi, Eiichiro*; Takebe, Akimitsu*; Nakajima, Toshihide*; Yamashita, Mitsugu*; Yamanouchi, Hirofumi*

岐阜県北端の神岡鉱山茂住孔には,跡津川断層系の茂住祐延断層を横断する活断層調査坑道があり,本坑道を利用して活断層に関する様々な研究が行われている。本調査では,活断層調査坑道における茂住祐延断層周辺の水理特性を把握することを目的とし,試錐コア調査・透水試験・湧水の分析を実施した。

The active fault survey tunnel that crossed the Mozumi-Sukenobu fault (a member of the Atotsugawa fault system) is located at the Kamioka mine, northern Gifu prefecture, Central Japan. The comprehensive study of the active fault such as the earthquake mechanism is done by using this tunnel. The purpose of this investigation is to define the hydrological characteristics inside and around the Mozumi - Sukenobu fault crush zones. The investigation is mainly Lugeon test and simple permeability test inside and around the crush zones.

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