Presentation Information

[VI-560]Practical application of image monitoring system for loose rockfall phenomena in mountain tunnel construction works

*Koki kumagai Kumagai1, Hirofumi Miyahara2, Naotaka Kikkawa3 (1. Tobishima corporation, 2. MAC corporation, 3. National Institute of Occupational Safety and Health, Japan)

Keywords:

tunnel face,loose rockfall,tunnel face shotcrete,1st shotcrete,Image monitoring system