固床工之動床模型試驗

Model Experiment of Groundsill Works on Moveable Channel Bed

游繁結(Fan-Chieh Yu) ； 黃政達(Cheng-Dar Huang)

《中華水土保持學報》 27卷3期 (1996/09) Pp. 245-253

https://doi.org/10.29417/JCSWC.199609_27(3).0008

摘要

為瞭解固床工在渠床動態平衡條件下之配置方式，本研究以動床模型之渠槽試驗，在各種流量、供砂量、坡度、床砂等變因下，觀測固床工不同間距與不同有效高度之水理特性與穩定溪床效果，並由因次分析尋求影響固床工配置之各參數，再經迴歸分析與相關分析之檢驗，以建立固床工之配置在動態平衡下之推估式，作為固床工設計之參考，而經與現地調查結果比較，顯示該推估式具有相當程度之適用性。

關鍵字

固床工

並列摘要

This study was conducted to investigate the arrangement of groundsill works on the dynamic equilibrium of moveable channel bed in the flume with different water discharges, sediment supplies, bed slopes, and sand particles on channel bed, as well as the different lengths and heights of groundsill's models. The dimensional analysis was used to find the relationship between the spaces of groundsill works and the hydraulics parameters. The regression analysis and the relation analysis were also conducted to determine the significant parameters used to derive an equation for estimating the space of groundsill works under the dynamic equilibrium state of channel bed. This equation was tested with the field data and proved to be useful in planning for groundsill works.

並列關鍵字

Groundsill Works