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題 名 | An Evaluation of Models of Flow Through Quartz Sand and Illite-Based Clay=對石英砂與伊利粘土內水流動模式的評估 |
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作 者 | 郭世忠; | 書刊名 | 黃埔學報 |
卷 期 | 34 1998.03[民87.03] |
頁 次 | 頁29-47 |
分類號 | 440 |
關鍵詞 | 石英砂; 伊利粘土; 水流動模式; Kozeny-carman; Poiseuille equation; Quartz sand; Illitic system; |
語 文 | 英文(English) |
英文摘要 | One of the commonly accepted relationships used in predicting advective groundwater flow is Darcy's Law. Other models for predicting water flow through porous media include the poiseuille, the Kozeny-Carman, and Buckingham-Reiner equations. Despitel the common usage of these models they all have practical limitations which limit their applicability to natural systems and materials. Much of the difficulty in using these relationships has been attributed to natural soil anisotropy, and the presence of nonhydraulic gradients in soils. Such gradients have been reported in the literature (Low 1961; Miller and Low 1963; Li 1963; Bolt and Groenevelt 1969; Law and Lee 1981; Desaulniers and Cherry 1989). The study presents the basic models for flow through a porous medium and discusses the strengths and weakness of these models, particularly when they are applied to clay soils. The results show that the use of the Kozeny-Carman equation to predict the hydraulic behavior of clean, uniform and well characterized sand can provide results that are generally similar to those found using the laboratory equipment and techniques developed in this laboratory program. Poiseuille equation came closer to matching the data obtained by laboratory testing of Illitic system but the match was not particularly good, especially for flow measured under conditions of high hydraulic gradient. |
本系統中英文摘要資訊取自各篇刊載內容。