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題 名 | 坡地滲漏含水層系統地下水面線之數值研究 |
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作 者 | 洪堅仁; 譚義績; 賴世寶; | 書刊名 | 國立臺灣大學農學院研究報告 |
卷 期 | 33:2 1993.06[民82.06] |
頁 次 | 頁67-86 |
分類號 | 443.67 |
關鍵詞 | 地下水面線; 含水層系統; 坡地; 滲漏; 數質模擬; 滲漏含水層; Numerical simulation; Leaky Aquifer; Hill slope; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究在理論方面,假設滲漏含水層之蓄水能力為零,借以考慮滲漏 含水層上下含水層之水頭差,代入達西定律計算出含水層與含水層間之入滲水 量,推導出多層含水層各含水層勢能線或自由水面線之穩態控制方程式,並以排 水量返覆迭代估算滲漏面以確定邊界之水頭大小。試驗方面,利用自行研發之砂 箱模型,配合87個水壓測量計有效的模擬坡地地下水之流動情形。數值模擬方 面,採自行發展的有限差分模式模擬,使達到理論與實驗合一之效果。 本研究的貢獻在於找出自由含水層之自由水面線與肯定拘限含水層在排水邊界 有自由水面線分離的現象,並計算出其水頭的大小與找出分離之臨界點。 |
英文摘要 | This paper presents a nonlinear theoretical solutions of freesurface on the hill slope leaky aquifer. A numerical method has beenused to determine the height of free surace in the leaky system andcalibrate with Rulon's study [ 1985]. Additional experimental studiesof a sand box hag been implemented to observe the free surface. Results of the experimental studies are established in order tocompare that of numerical scheme. The location of seepage face of groundwater outflow from theunconfined aquifer has not enough knowledge to solve it. This paperpresents a nonlinear theoretical solutions of free surface on the slopeleaky aquifer and a numerical method has been used to determinethe height of free surface in the leaky system. The conceptual modelis developed based on Dupuit-Forchheimer theory in a leaky systemto evaluate the processes. An experimental sand box has been implemented to observe thefree surface of unconfined aquifer and the hill slope part of confinedaquifer. Results of the experimental studies are established in orderto compare the theoretical solutions. |
本系統中英文摘要資訊取自各篇刊載內容。