Full scale experiments for rockfall protection wall using large-size soil-bags

• Published in: Japanese Geotechnical Journal Vol. 18; no. 3; pp. 285 - 297
• Main Authors: UEDA, Daisuke, SAWADA, Kazuhide, NAMBA, Masakazu, YASHIMA, Atsushi
• Format: Journal Article
• Language: Japanese
• Published: Tokyo The Japanese Geotechnical Society 01.09.2023; Japan Science and Technology Agency
• Subjects: Disasters; Emergency preparedness; Energy; full scale experiment; Full scale tests; Impact damage; Momentum; permanent recovery work; Recovery; Rock falls; Rockfall; rockfall prevention work; rockfall protection wall using large size soil-bag; Rocks; Soil; Soil investigations; Soil layers; Soil structure; Soils
• ISSN: 1880-6341
• DOI: 10.3208/jgs.18.285

In recent years, momentum has been rising to use large-size soil-bag to permanent recovery work as for road quick recovery due to the slope disasters that often occur along mountainous roads. In order to obtain the fundamental data for diverting large-size soil-bag to permanent recovery work a series of full-scale experiments of rock fall are conducted in this study. The behavior, the damage state, and the application range of impact energy of the protection wall made with large-size soil-bag are investigated by full-scale tests. It was found that, the laminated soil-bag wall structured of 6×3 soil-bags on the bottom layer, 5×2 soil-bags on the middle layer, and 4×2 soil-bags on the top layer was able to catch the falling rock impact energy of 1,300kJ. Furthermore, it was confirmed that the number of soil-bags reacting against impact becomes larger with increasing the impact energy.