Geostatistical Evaluation of the Mechanical Properties of Rock Mass for TBM Tunnelling by Seismic Reflection Method |
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| Authors: | K Aoki Y Mito T Yamamoto S Shirasagi |
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| Institution: | (1) Kyoto University, Kyoto, Japan;(2) Kajima Corporation, Tokyo, Japan |
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| Abstract: | Summary. The evaluation of the rock mass mechanical properties by the seismic reflection method and TBM driving is proposed for TBM
tunnelling. The relationship between the reflection number derived from the three-dimensional seismic reflection method and
the rock strength index (RSI) derived from TBM driving data is examined, and the methodology of conversion from the reflection number to the RSI is proposed. Furthermore a geostatistical prediction methodology to provide a three-dimensional geotechnical profile ahead
of the tunnel face is proposed. The performance of this prediction method is verified by actual field data. |
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| Keywords: | : TBM tunnelling method seismic reflection method TBM driving data rock strength index geostatistics |
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