Horonobe Underground Research Laboratory project research and development plan in Phase 2; H20-21
Iwatsuki, Teruki
; Sato, Haruo; Tanai, Kenji
; Inagaki, Manabu; Sawada, Atsushi
; Niinuma, Hiroaki; Ishii, Eiichi
; Maekawa, Keisuke
; Tomura, Goji; Sanada, Hiroyuki; Kunimaru, Takanori; Asamori, Koichi; Niizato, Tadafumi
; Tokiwa, Tetsuya; Sugita, Yutaka
; Yamazaki, Masanao; Nakamura, Takahiro; Fujita, Tomoo
; Taniguchi, Naoki
; Kobayashi, Yasushi; Hayashi, Katsuhiko; Saito, Yuya; Tachi, Yukio
; Iijima, Kazuki
; Sasamoto, Hiroshi

The research and development plan for geological investigation, engineering technology and safety assessment during the drilling of a shaft down to intermediate depth are summarized according to the Midterm Plan till 2009 Fiscal year of JAEA. This report describes subject, current status and programme in the "Phase 2: Construction phase" (investigations during construction of the underground facilities). Furthermore regarding R&D plan in next Midterm Plan of JAEA, preliminary ideas are summarized.