Presentation Information
[III-269]Occurrence of Hard Sandstone Gravel Groups Encountered during Shield Excavation and Causes of Formation of the Gravel Groups
*Ryosuke Tsuruta1, Yusuke Takiguchi1 (1. HAZAMA ANDO CORPORATION)
Keywords:
shield tunnel,concretion,edogawa group,sandstone,Large gravel,Pleistocene
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