簡易型システムによる橋脚周辺および発生源における流木挙動の観測調査

抄録

In this study, the behavior of driftwoods around bridge piers and their source region were observed by using a web-based and remote-controlled monitoring system and simplified stand-alone systems. The later stand-alone systems were proposed to solve the problems that the former advanced web-based system inherently posses, such as cost-demanding maintenance or restrictions of locations. During the observation period, the extensive depositions of driftwoods and the movement of woods in a source region of driftwoods were not observed. However, the temporal change in the number of driftwoods which flew downstream around bridge piers were observed. The result confirms the previously observed tendency, in which the emergence of a peak of the number of driftwoods is observed in advance of that of water level.