Sutro堰型出流口滯洪水理特性之驗證－以梯形入流歷線為例

A Study on Hydraulic Characteristics Model of Detention Pond with Sutro Weir Outlet

陳正炎(Jen-Yan Chen) ； 張榮毅(Jung-Yi Chang) ； 康嘉翔(Jia-Shiang Kang) ； 吳坤哲(Kun-Che Wu)

《中國土木水利工程學刊》 22卷4期 (2010/12) Pp. 353-361

https://doi.org/10.6652/JoCICHE.201012_22(4).0001

摘要

The detention facilities can effectively reduce the peak flow, delay the peak time of flood or increase the infiltration. Sutro weirs and isosceles trapezoidal inflow hydrographs are used in this research. We use the Runge-Kutta numerical method to perform mathematical calculation and compare with the rectangular weir experiment. The Runge-Kutta numerical method provides a good way for flow prediction. After compared with experimental achievement, we can conclude Sutro weirs are better than rectangular weirs when peak reduction degree κ are the same and shape ratio a/b (a is the base on a rectangular weir of depth with Sutro weir, b is the base on a rectangular weir of width with Sutro weir) is less than 0.7. The above methods also give some suggestions and applications for designers.

關鍵字

梯形入流歷線 ； Sutro堰 ； 滯洪池

並列摘要

The detention facilities can effectively reduce the peak flow, delay the peak time of flood or increase the infiltration. Sutro weirs and isosceles trapezoidal inflow hydrographs are used in this research. We use the Runge-Kutta numerical method to perform mathematical calculation and compare with the rectangular weir experiment. The Runge-Kutta numerical method provides a good way for flow prediction. After compared with experimental achievement, we can conclude Sutro weirs are better than rectangular weirs when peak reduction degree κ are the same and shape ratio a/b (a is the base on a rectangular weir of depth with Sutro weir, b is the base on a rectangular weir of width with Sutro weir) is less than 0.7. The above methods also give some suggestions and applications for designers.

並列關鍵字

trapezoidal inflow hydrographs ； sutro weir ； detention pond