The Outline of the research and development of EM-ACROSS in Tono area

Nakajima, Takahiro; Kunitomo, Takahiro; Kumazawa, Mineo*; Nagao, Hiromichi*

ACROSS(Accurately Controlled Routinely Operated Signal System) has developed to acquire the detailed information on the tectonically active zone. The technology for example the transmission and receiving technique, the data analysis and the interpretation technique of the ACROSS signal is able to apply not only to seismology but also to other field. We considered the ACROSS technology may apply to the engineering technology of the Mizunami Underground Research Laboratory (MIU) project, for example monitoring of the change of the geological environment around shafts and also the strength of the shaft concrete itself. It is planned that the examination for three years will be made from fiscal year 2007, and the new observation site around the MIU was established, and the data acquisition and data analysis have been carried out. This report compiled technical matters among the results obtained in the research and the development of the EM-ACROSS.