頁籤選單縮合
題 名 | 大甲溪下游蓄水池容量設計與風險分析之研究=Study on Capacity Design and Risk Analysis of the Storage pond in the Downstream of Tachia Creek |
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作 者 | 童慶斌; 陳韻如; 陳主惠; 譚義績; | 書刊名 | 農業工程學報 |
卷 期 | 49:1 2003.03[民92.03] |
頁 次 | 頁34-51 |
分類號 | 443.96 |
關鍵詞 | 容量設計; 風險評估; Capacity design; Risk analysis; |
語 文 | 中文(Chinese) |
中文摘要 | 臺灣許多農田灌溉多是引用川流式的灌溉方式,但因河川的水量不穩定,且經常在大雨過後取水口遭沖刷而崩塌,使得取水口無法順利取得河川水量供應農田所需,造成缺水之問題,農田用水不足可興建小型的蓄水池供應以降低衝擊。本研究分析大甲溪下游虎眼圳的農業用水情形,並根據過去的計畫灌溉需水量、實際引水量與故障發生的時間評估蓄水池之容量。以滿足不同供水之機率分佈,決定不同信賴度下所需之蓄水池容量。並以模擬方式擬定最佳的操作規則與最佳蓄水池體積。研究分析結果得知新闢一取水口並興建84萬噸之調蓄水池為較佳之方案。因921大地震後,石岡壩損壞喪失調蓄功能,對下游取水口損壞次數可能造成影響,故本研究藉由模擬大甲溪水資源系統利用情形,評估石岡壩的破壞對下游農業用水取水的影響,結果顯示下游農業取水口遭破壞的機會將可能增加約25%。 |
英文摘要 | Many farmlands withdraw irrigation water from the stream directly in Taiwan. Available irrigation water is not stable due to the high variation of streamflows and the intakes usually damaged after heavy rain, by which may cause water shortage. Water deficits can be mitigated by building storage ponds. This study analyzed the water uses of the Hu-Yan canal located in the downstream of the TaChia creek. Furthermore, the capacity of a storage pond was designed for the canal, based on irrigation requirements, actual record of applying irrigation water, the timing and duration of malfunction of intakes. The capacity was determined to satisfy certain reliability. Operation rules were also optimized based on a simulation study. The results suggest building a storage pond with the capacity of 840,000 m3 and a new intake. The storage function of the Shi Kan Dam is badly forfeited after the 921 earthquake. It is possibility of the damage to the downstream agriculture field's water-gate is up to 25% through stimulating the usages of Ta Chia Creek water system. |
本系統中英文摘要資訊取自各篇刊載內容。