洪水流の伝播機構に及ぼす河道状況の変化とその解析
キーワード:
propagation mechanism,
flood flow,
compound channel,
vegetation,
theoretical analysis,
river management
2007 年 13 巻 p. 327-332
詳細
2007 年 13 巻 p. 327-332
It is very important to grasp the hydraulic characteristics of flood flow in compound channels for the river management This study aims to clarify the propagation mechanism of flood flow and compare observed propagation speed with those of the theoretical expression derived for compound channels with vegetations.
As a result, we explain the relationship between the delay of propagation speed and various changes with the time in the channel situation in the Tone River and Edo River. The theoretical expression provides a good explanation for transverse velocity profile and propagation speed of flood flow through compound channels. Furthermore, perspectives for the river vegetation management are stated on the basis of the result of this study.
