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央广网拉萨8月22日消息(记者 牛夏来)拉萨河城区段综合整治工程3#拦河蓄水项目位于太阳岛下游约1.04km、柳梧大桥上游约1.4km、青藏川藏通车纪念碑处。该工程的建设目的是在拉萨河的平水期或枯水期阶段,通过控制水闸闸门,在上游形成一片1395亩的人工湖水面,增加城市空气含氧量和湿度。同时,补给城市地下水位,提升拉萨城市品位,具有巨大的生态效益和社会效益。
记者了解到,该工程挡水建筑物按100年一遇洪水设计,按200年一遇洪水校核,拦河蓄水坝下游防冲消防能力按100年一遇洪水设计,河道治导工程按20年一遇洪水设计,并进行绿化等措施改善环境,具有显著的防洪效益和环境效益。
此外,该项目还满足了景观蓄水及河道两岸交通连接等综合要求,据了解,拦河蓄水工程未实施之前,拉萨河沿岸是一片石头滩,而现如今却是绿树成荫,鲜花烂漫,不乏游客及市民在此驻足、漫步、游玩。尤其是夜间在独具特色的光环境下,使这座城市显得更加迷人。
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