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題名 | 抽水量的時空分佈對花蓮鳳林地區地下水位之影響=Effect of Pumping Activities on the Groundwater Levels in the Fenglin Area of Hualien County |
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作者姓名(中文) | 許少華; 林伯聰; | 書刊名 | 農業工程學報 |
卷期 | 48:4 2002.12[民91.12] |
頁次 | 頁91-101 |
分類號 | 443.67 |
關鍵詞 | 地下水; 抽水; Groundwater; Pumping; Modflow; |
語文 | 中文(Chinese) |
中文摘要 | 本文以PMWIN模式(MODFLOW)模擬鳳林綜合開發區不同抽水策略之地下水位,探討抽水量的時空分佈對於該地區地下水水位變動之影響,提供當地未來運用地下水資源時抽水之操作參考。結果得知抽水井若設置在地下水之上游來源其影響較設置於下游地區的開發區中來得小,此乃因抽水井距離較遠且水流有類似輻射狀之故。而抽水井若僅於枯水季抽水,雖會造成枯水季地下水位較大之降幅,但於豐水季時停止抽水使之自然接受補注,於豐水季結束後其地下水位與全年未抽水之地下水水位面十分接近。反觀全年抽水之情況,雖於枯水季時地下水水位降幅小於前者,但因不間斷的抽水造成地下水無法有效蓄留,而導致豐水季後其地下水水位遠低於未抽水之情況。 |
英文摘要 | A groundwater model is constructed, using PMWIN (Modflow), to simulate the draw-down behavior in the Fenglin alluvium of Hualien County. Scenarios of pumping in different time and locations were performed to evaluate the impact of pumping. Results show that if the pumping moves upstream to the source of groundwater, the impact will be less significant. If pumping only takes place in the dry season, although groundwater level in the dry season will be much lower, however, in the wet season, the groundwater level will be back to the stage similar to situation without any pumping. This is due to effect of natural recharge. On the other hand, if the total amount of pumping discharge is spread evenly to everyday pumping, although the groundwater level is much higher in the dry season, eventually, even in the wet season, a significant draw-down is preserved. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。