Abstract
Recently, volcano activation is increasing. Accordingly, various disasters occur. Among them, a debris avalanche has heavy effect for people who are living around volcano. Therefore, the observation method to surveillant volcano surface is necessary. In this study, we focus on to surveillant amount of volcano ash using excavator. Light and small observation tool is better than heavy tool in case of volcano surface. Because of we would like to move the observation tool to upper position of volcano surface. If the observation tool is light and small, the autonomous carrier like multi copter can move it. Our group develops light small excavator by slider mechanism and rotary drilling.
