Horonobe Underground Research Laboratory project synthesis of phase I investigations 2001-2005 volume "Geoscientific Research"

Ota, Kunio ; Abe, Hironobu ; Yamaguchi, Takehiro; Kunimaru, Takanori; Ishii, Eiichi   ; Kurikami, Hiroshi  ; Tomura, Goji; Shibano, Kazunori; Hama, Katsuhiro ; Matsui, Hiroya ; Niizato, Tadafumi  ; Takahashi, Kazuharu; Niunoya, Sumio; Ohara, Hidefumi; Asamori, Koichi; Morioka, Hiroshi; Funaki, Hironori ; Shigeta, Naotaka; Fukushima, Tatsuo

The Horonobe URL Project started in 2000. Research and development activities are planned over three phases, that will span a total duration of about 20 years: the 1st surface-based investigarion phase (6 years), the 2nd URL construction phase (8 years) and rhe 3rd operation phase (12 years). Geological, geophysical, geo-mechanical, hydrogeological, and hydro-geochemical investigations have been carried out during the surface-based investigation.