Translated Titles

The Effect of Free Over-fall by Upstream and Downstream Channel Bed Slopes on Impact Position


黃劼暉(Jie-Hui Huang);謝俊賢(Chun-Hsien Hsieh);陳正炎(Jen-Yan Chen)

Key Words

沖擊位置 ; 渠床坡度 ; 投潭水 ; Impact position ; channel bed slopes ; free over-fall



Volume or Term/Year and Month of Publication

46卷4期(2015 / 12 / 01)

Page #

233 - 238

Content Language


Chinese Abstract


English Abstract

Most Taiwanese rivers are rapid and steep, with a large capacity for vertical erosion. Hydraulic structures that cross rivers, such as drop structures, check dams and weirs, are widely used to decrease flood erosion, to stabilize riverbeds, to protect structures that cross rivers and to provide public water and irrigation. The hydraulic structures make the upstream channel stable and sediments cannot be transported downstream so they remain in front of the riverbed of drop structures on the other side. These structures usually induce a change in the upstream slope and the super critical flow condition, which produces a large impact force downstream and destroys energy dissipating structures. This paper studies the impact location for different upstream and downstream channel bed slopes and compares a theoretical analysis and experimental results.

Topic Category 生物農學 > 農業
生物農學 > 森林
生物農學 > 畜牧
生物農學 > 漁業
生物農學 > 生物環境與多樣性
工程學 > 土木與建築工程
工程學 > 市政與環境工程