查詢結果分析
來源資料
頁籤選單縮合
題名 | 以河底集流管開採河川伏流水量之評估方法探討=Discharge Evaluation Methods for the Intake Structure of Under-River Pipes |
---|---|
作者姓名(中文) | 許少華; 黃文圻; 林時猷; | 書刊名 | 農業工程學報 |
卷期 | 48:1 2002.03[民91.03] |
頁次 | 頁39-51 |
分類號 | 443 |
關鍵詞 | 伏流水; 變動飽和土; 數值模擬; 砂箱試驗; 迴歸分析; Interflow; Variable saturated zone; Numerical simulation; Sand-box experiment; Regression analysis; |
語文 | 中文(Chinese) |
中文摘要 | 伏流水取水量估計以往都是由傳統經驗式作為水量估算,但有鑑於經驗式各有適用條件上的限制,估算之取水量往往彼此差距甚大且通常較實際取水量大出許多。故本文以濁水溪沖積扇扇頂的河床伏流水為研究對象,研究土層之飽和水力傳導係數、集水管管徑、集水管埋設位置以及集水管上下游河流方向的水力坡降等因素對伏流水取水之影響。經由SEEP2D模式之數值模擬及砂箱試驗的相互驗證下,可找出影響伏流水取水的相關敏感參數,最後再由這些敏感參數來建立最大集水量經驗通式。雖經驗通式估算流量皆比傳統經驗式估算之流量來的小,然此經驗通式,可用來估計濁水溪沖積扇扇頂區之伏流水安全集水量與集水管管徑大小以及埋設深度等設計因子之相互關係。此集水量經驗通式乃利用濁水溪沖積扇區域各相關參數而得到,故僅適用於此區域,然通式求得之步驟及方法,也可引為其他欲取水區域之用。 |
英文摘要 | There are various formulas for predicting the intake discharge for under river pipes (or tunnels). The assumptions they made are for fully saturated flow and they usually give values far optimistic than the resulting outcomes in real cases. SEEP2D software for simulating flow in variable saturated flow in steady state is employed to study the flow field and intake discharge for cases with different conductivity, pipe dimension, deepness of the pipe, and the groundwater gradients. Sensitivity analysis was performed to determine the relative importance between parameters. Formulation for maximum intake discharge within a specific site in the dry season is obtained by multi-variable regression. Design charts are also invented. This offers a different choice for discharge, pipe-dimension, or deepness designing in the preliminary planning. Sand-box experiments prove that the suggested method is relative conservative. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。