平成28年熊本地震による土砂災害

抄録

The landslides on April 16^th 2016 in Kumamoto prefecture, especially in the Aso volcanic range, with intense earthquake of M 7.3 (maximum acceleration=1,791 gal) yielded countless instances of landslide and debris flow that induced tremendous damages and causalities in the area. Hence, field investigation and reconnaissance were conducted by the Japan Society of Erosion Control Engineering to delve into this sediment-related disasters. The various results and the information containing phenomena of slope movements, obtained through this investigation were reported as the primary report, mentioning damage, geologic-geomorphologic features and geo-technical characteristics of the landslides, vegetation effects on the slope instability phenomena, possibility of occurrence of secondary disasters, urgent measures for mitigating secondary disasters, and the efficiency of Sabo facilities in this disaster.