JP4094770 ROCK-BED JUDGING SYSTEM.

PROBLEM TO BE SOLVED: To prepare or change the logic of rock-bed judgment while continuing excavating work. SOLUTION: An excavation data creating section 21 creases various kinds of excavation data based on the measured values from measuring instruments 13 to 15 and image signals from monitor camera 16. The rock-bed judging system 22 assesses the grade of natural ground by using a fuzzy model stored in a judgment logic storage section 24 by means of judgment processing section 25. Also, learning data comprising a pair of judged results on the grade of natural ground by human being based on the rock-bed appeared from the tail of TBM and the excavation data on the same rock-bed stored in excavation data base 26 are creased, and a learning data base 27 is prepared.; A learning processing section 23 learns the fuzzy model by the quickest diving method by using the learning data from the learning data base 27. In this way, the logic for rock-bed judgment can be prepared and changed easily without stopping the tunnel excavation work.

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