地中構造物⑤

[25-9-4-07] Verification test on changes in elastic wave velocity in the ground and stress release rate during propulsion of steel pipes under railway tracks

*AKIHIKO MIWA¹, Takashi Nakayama¹, Tatsuki Shimizu¹, Takahiro Ishii¹ (1. Railway Technology Research Institute)

Keywords:underpass construction method, elastic wave velocity, stress release rate