Disaster restoration work for the eruption of Mt Usuzan using an unmanned construction system

YUJI HIRAMATSU , TAKASHI AONO 2 and MASAMI NISHIO 3 1 Department of Advanced Technology Research, Kajima Technical Research Institute, 2-19-1 Tobitakyu, Chofu, Tokyo 182-0036, Japan, hiramatsu@kajima.com 2 Former: Mt Usuzan unmanned constructionofŽ ce, Kajima-Taisei-Nishimatsu-Kumagai-FujitaJoint Venture, 67 Kashimacho, Date, Hokkaido 052-0024, Japan, aonota@kajima.com 3 Former: Muroran District Public Works Management OfŽ ce prefecture of Hokkaido, 9-11 Saiwaicho, Muroran, Hokkaido 051-8555, Japan