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Report No.

Examination concerning application of ACROSS to engineering technology of the MIU Project; Final report

Hasegawa, Ken; Kunitomo, Takahiro; Hashizume, Shigeru; Horiuchi, Yasuharu; Matsui, Hiroya 

ACROSS has been developed to acquire the detailed information on the tectonically active zone. The technology developed here, the transmission and reception technique, the data analysis and the interpretation technique of the ACROSS signal for example, is able to use in seismology but also in other fields. We considered the ACROSS technology may apply to the engineering technology of the MIU project, for example, to the geological environment monitoring around the shafts and the strength assessment of the shaft concrete lining. Its examination was made in the three years period from fiscal year 2007 to 2009. However, it was concluded that we required another two years of observation to evaluate the applicability of the ACROSS as a technology to monitor the geological environment around the shafts and research galleries. In this report, we describe the evaluation result of the ACROSS based on the data observed by the end of 2011.



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