堤防・ダム（現地調査）

[13-2-2-07] Changes in grain size distribution of basement strata related to sand volcano and cave-in on the inside in Kitagawa River, Miyazaki Prefecture, caused by Typhoon No. 14 in 2022

*Maeda Kenichi¹, Masanori Ishihara⁵, Mitsu Okamura², Kohei Ono², Naoko Jinnouchi², Shunzo Kawajiri³, Akira Shinsei⁶, Akinobu Ogasawara⁴, Naoki Sawamura¹, Ami Okuwa¹, Mamoru ichinose¹ (1. Nagoya Institute of Technology, 2. Ehime Universitiy, 3. Kyushu Institute of Technology, 4. National Institute of Technology, Toyota College, 5. Public Works Research Institute, 6. OYO CORPORATION)

Keywords:river levee, sand volcano, cave-in