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Back遇雨即傳淹水災情 斗六湖底大排通洪瓶頸啟動改善
遇雨即傳淹水災情 斗六湖底大排通洪瓶頸啟動改善
Developing
自由时报2 hours agoEnvironment3 min readChinaView translation

遇雨即傳淹水災情 斗六湖底大排通洪瓶頸啟動改善

工程經費1.8億元,拓寬渠道並改善橋梁與渡槽,降低溢堤風險

Quick Look

雲林縣湖底大排治理工程已啟動,經費1.8億元,預計2028年汛期前完工,將渠道拓寬至12至15公尺並改善橋梁與渡槽,降低溢堤風險。

AI-generated summary

Why It Matters

湖底大排位於林內鄉及斗六市境內,集水面積約700公頃,流經多個村落,最後匯入乾溪。因河道狹窄、跨渠渡槽阻礙水流、堤岸高度不足,每逢豪雨即發生溢淹情況,尤其2024年7月底凱米颱風期間淹水嚴重。

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湖底大排流經斗六、林內多個村落,渠道寬度只有4至8公尺,將拓寬為12至15公尺。(圖由雲林縣府提供)

流經斗六市、林內鄉多個村落的湖底大排,因沿線多處渡槽橫跨排水形成通洪瓶頸,每遇豪大雨即傳出淹水災情,水利署核定縣府治理工程3億元,確定完成110多筆土地徵收後,啟動改善工程,預計2028年汛期前可完工。

湖底大排位於林內鄉及斗六市境內,集水面積約700公頃,流經建新、九芎林、營盤園、下長流仔、頂長流仔及上水尾口等村落,最後匯入乾溪,因部分河道狹窄、跨渠渡槽阻礙水流、堤岸高度不足,每逢豪雨即發生溢淹情況,尤其2024年7月底凱米颱風期間,國3下游至排水出口段兩岸淹水嚴重,大量洪水溢流至文殊寺周邊,附近民眾怨聲載道。

縣府水利處指出,風災後,立委張嘉郡等人邀集水利署等單位現勘,縣府提出整體治理改善方案,即獲中央核定,由於工程涉及110筆私人土地徵收問題,經過地方多次說明、協議價購,終於完成用地取得,10月底順利啟動工程。

水利處長許宏博表示,因應極端氣候,短延時強降雨已成常態,湖底大排採25年重現期距洪峰流量不溢堤為治理標準,工程經費1.8億元,施作內容有,渠道寬度由4至8公尺拓寬為12至15公尺,改善半重力護岸長約3.3公里、10座橋梁,新設791公尺防汛道路、3座提吊式不鏽鋼渡槽、7座堤後入流工。

許宏博說,原本阻礙水流的跨渠渡槽改為提吊式設計,平時維持農民供水功能,遇豪大雨時可提吊至高處,避免阻礙洪水宣洩,全部工程完工後,可提升湖底大排的通洪斷面與防洪標準,降低暴雨期間溢堤風險,讓地方居民告別長年淹水之苦。

湖底大排流經斗六、林內多個村落,渠道寬度只有4公尺,將拓寬為12至15公尺。(圖由雲林縣府提供)

What to Watch

AI outlook — possibilities, not facts

  • 湖底大排治理工程將於2028年汛期前完工

    Very likely · Within months

Open Questions

  • 工程具體完工日期是否會提前或延後
  • 土地徵收協議價購的具體金額與細節
  • 完工後防洪標準能否完全解決當地淹水問題

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