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題名 | 有限深度土層內經隔板非受壓流之探討=Investigation on an Unconfined Flow through a Sheetpile in Stratum with Finite Depth |
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作者姓名(中文) | 施清吉; | 書刊名 | 農業工程學報 |
卷期 | 50:1 2004.03[民93.03] |
頁次 | 頁12-23 |
分類號 | 443 |
關鍵詞 | 非受壓流; 地下水; Schwarz-christofell轉換函數; Unconfined flow; Groundwater; Schwarz-christofell transformation; |
語文 | 中文(Chinese) |
中文摘要 | 飽和含水土層上方為一定水位h之蓄水,其下之滲流流經土層內的隔板後,形成一二維非受壓流。假設隔板之下游自由面為水平,但其深度d未定,利用Schwarz-Christofell轉換函數求其「解」:未知變數甚多,但只決定於隔板深度s與土層厚度D之間比值s/D,以及另一比值h/D。研究結果顯示自由面位於隔板末端之下方,且其「解」係由非反正切函數所組成:另無因次單位寬度流量有極大值。 |
英文摘要 | A constant depth h of storage of water above a saturated stratum resulted in a seepage, and through the sheetpile in the stratum a two dimensional unconfined flow was formed. It was assumed that the free surface downstream of the sheetpile was horizontal with an unknown depth d, and the Schearz-Christofell transformation was utilized to obtained the solution. In the analysis of a lot of unknown variables were involved, however all were dependent of the ratio between the sheetpile depth s and the stratum thickness D, and the other ratio h/D. Results indicated that the free surface was under the tip of the sheetpile and the solution consisted mainly with functions exclusive of the arc tangent. It was further shown that the dimensionless discharge per unit width is with a maximum. |
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