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フルテキストURLKJ00004351083.pdf ( 478.8KB ) 公開日 2010-04-19
タイトルThe experimental study on the model of soil erosion by the impact of raindrops
作成者Fujiwara, Teruo
Fukada, Mitsuo
Matsuzaki, Hironori
作成者ヨミフジワラ, テルオ
フカダ, ミツオ
マツザキ, ヒロノリ
作成者別表記藤原, 輝男
深田, 三夫
松崎, 浩憲
作成者所属山口大学工学部
内容記述(抄録等)Soil erosion is caused by the interaction between rainfall and soil factors. Despite the considerable complexity of interaction between these factors, there is a need to reveal their mechanisms, and to quantitatively predict the rate of soil loss. In this study, the relationship between the rate of soil loss and factors upon which this loss depends was investigated using dimensional analysis. Erosion processes caused by the effects of raindrop impact were represented by a simple mathematical model which has been used in bed-load studies in the open channel. This model contains two parameters ξ_h, η_F, the first represents the effect on the detachability of soil by raindrops, the second represents the effect on soil transport by surface flow. Regarding to the simulated laboratory experimental data, it was found that the raindrop impact causes the transportation of soil by surface flow even if the flow is below the critical tractive force and the value for ξ_h increased in the begining and then decreased with increasing depth of water flow. The value for η_F increased linearly with increasing the water depth.
本文言語eng
主題工学
資料タイプtext
ファイル形式application/pdf
出版者山口大学工学部
出版者ヨミヤマグチ ダイガク コウガクブ
NII資料タイプ紀要論文
ISSN0386-3433
NCIDAA0086073X
学内刊行物(紀要等)Technology reports of the Yamaguchi University
掲載誌名Technology reports of the Yamaguchi University
3
5
開始ページ417
終了ページ426
発行日1986-12
著者版/出版社版出版社版
備考本文データは国立情報学研究所において電子化したものである
リポジトリIDKJ00004351083
地域区分山口大学
URIhttp://www.lib.yamaguchi-u.ac.jp/yunoca/handle/KJ00004351083