Deep underground utilization system and its technical subject

Abstract

Deep underground Utilization attracted much attention during Japan's “Bubble” economy in late 1980'. But the collapse of the bubble economy cooled down the momentum for deep underground utilization. However the number of uses of deep underground spaces are steadily increasing. The Provisional Investigation Committee for Deep Underground Utilization submitted its final report in 1998. Now the government is performing internal coordination to establish a legal system. This paper explains the correlation between legal system and technical subject.