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攔沙壩(防砂壩)

20 bytes removed, 23:14, 6 April 2016
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[[Image:check dams (gully plugs) icon.png|right|80px]]
[[Image:check dam india.jpg|thumb|right|200px|雨水保存之攔沙壩。 NMDC Diamond Mine, Panna, Madhya Pradesh. 照片來源:[http://www.retailforsuregreenfieldeco.com/www/photogallery.php Greenfield Eco Solutions Pvt. Ltd.]]]
攔沙壩是種小型、暫時或永久性的壩,建設橫越排水溝渠、渠道、低窪地或水道,目的為減緩一定程度範圍內的暴雨含砂水流速度。與其將攔沙壩歸類為一種逕流收集技術,說它是洪水的一種似乎更為貼切。建造攔沙壩可使用木材、石頭、砂礫石填充沙袋,或磚塊及水泥。攔沙壩在肯亞及印度運用十分廣泛。這些攔沙壩亦能作為漏水壩。建築在河床內且沒有粗砂運輸(沙壩)之壩,最終可能將成為攔沙壩。攔沙壩與其他水利結構相較之下較為便宜,且可維持約二至五年。
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