頁籤選單縮合
題 名 | 地層下陷簡易近似模式之構建=Construction for the Simple Approximate Solution in Land Subsidence |
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作 者 | 施清吉; | 書刊名 | 農業工程學報 |
卷 期 | 49:2 2003.06[民92.06] |
頁 次 | 頁13-22 |
分類號 | 443.67 |
關鍵詞 | 地層下陷; 地下水; 貝塞爾函數; Land subsidence; Ground water; Bessel functions; |
語 文 | 中文(Chinese) |
中文摘要 | 一般而言,無限量地抽取地下水將導致地層持續下陷,且沉陷之範圍將不斷地擴大,依此條件而建立之地層下陷近似模式,其適用範圍為無因次時間τ必須小於10⁷;但在實際應用上,τ值遠大於10⁷,甚至可高達10[8e67]。因此,本研究根據在適用範圍之近似模式,另構建以簡單函數為主,且可適用於任何不同τ值之簡易近似模式,涵蓋之項目計有:最大瞬時沉陷量、瞬時沉陷範圍與瞬時沉陷剖面。 |
英文摘要 | With a view point of the acknowledgement that the continuous pumping of the groundwater will result in a continuous land subsidence and a continuous enlargement of the area of land subsidence, the approximate solution for land subsidence is applicable only if the value of the dimensionless τ is less than 10⁷. However, in the field application, values of τ are always greater than 10⁷, sometimes as high as 10¹². Based upon the approximate solution in its applicable range, another simple approximate solutions consisting of some simple functions are constructed, and the newly constructed simple approximate solutions include the maximum instantaneous amount of subsidence, the instantaneous area of subsidence and the instantaneous subsidence profile. |
本系統中英文摘要資訊取自各篇刊載內容。