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List of products by author: J. Komatsu

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    Abstract: In Japan, Tunnel boring machine (TBM) has been used fluently in soft ground at urban area and these tunnels are called “shield tunnel”. Until 1980, the most of all machine was manual excavate type. However, the ground surface settlement was occurred at many sites. As a result, the earth pressure type and slurry type were developed and These are used mainly. Moreover the original design method...

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