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題 名 | 孔口式缺口應用於水田水庫之可行性研究=A Study on the Feasibility to Apply the Orifice-type Outlet to the "Paddy Field Dam" |
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作 者 | 陳榮松; 黃柏維; 程運達; | 書刊名 | 農業工程學報 |
卷 期 | 62:1 2016.03[民105.03] |
頁 次 | 頁64-76 |
分類號 | 434.287 |
關鍵詞 | 水田; 矩形堰式; 孔口式; 排水缺口; Paddy field; Rectangular weir; Orifice; Drainage outlet notch; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究將水田視為「水田水庫」的概念,配合現地觀測試驗取得排水口的流量係數及水田之損失強度以建置水收支模式,並利用數值分析方法於水收支模式中求解水深。為了探討所研擬的孔口式缺口排水機制之可行性,擇定以位於台中市霧峰區面積為0.3 ha 的標準重劃水田為試驗區。藉由試誤法搭配GME 評估指標以求得於兩種型式(矩形堰式及孔口式)、兩種缺口寬(B = 15 及30 cm)、三種孔口間距(1.5、2.5及3 cm)情境下的損失強度與流量係數,由計算值與觀測值之間高度的相關性,可知本研究設計的孔口式缺口確實具有可行性。此外,相對於一般矩形堰式,孔口式對洪峰之削減效果甚佳。 |
英文摘要 | In this article, we take paddy fields as paddy reservoirs, establish a water balance model with the flow coefficient and loss rate from field tests, and use numerical analysis techniques to obtain the depth of inundation. To evaluate the feasibility of the orifice outlet mechanism, we select a 0.3 ha readjusted paddy area in WuFon district, Taichung, as the research site. We use trial and error method with evaluation index GME to obtain flow coefficients and lost rates under two types of outlet notch(rectangular weir and orifice) with two width (15, 30 cm) and three orifice openings(1.5, 2.5, 3 cm). High correlation between observed and simulated results indicates the enhanced notch mechanisms are feasible. Compared with the rectangular weir type outlet notches, the orifice type ones are superior in flood mitigation. |
本系統中英文摘要資訊取自各篇刊載內容。