Hiroumi NIWA

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Speaker, Author, Co-Author

Tue. May 28, 2019 3:30 PM - 5:00 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

[J] Poster
| H (Human Geosciences )
| H-TT Technology & Techniques

[H-TT22] New Developments in Shallow Geophysics

[HTT22-P02] The P and S wave velocity and geological conditions of shallow surrounding tunnel ground by velocity logging on tunnel side wall

*Kenji OKAZAKI¹, Toshiyuki KURAHASHI¹, Hiroumi NIWA² (1.Civil Engineering Research Institute for cold region, Public Works Research Institute, 2.FUJITA corporation)

Tue. May 28, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

[J] Poster
| H (Human Geosciences )
| H-TT Technology & Techniques

[H-TT22] New Developments in Shallow Geophysics

[HTT22-P02] The P and S wave velocity and geological conditions of shallow surrounding tunnel ground by velocity logging on tunnel side wall

*Kenji OKAZAKI¹, Toshiyuki KURAHASHI¹, Hiroumi NIWA² (1.Civil Engineering Research Institute for cold region, Public Works Research Institute, 2.FUJITA corporation)