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3年搬运700个西湖到北方 这项工程堪称世界第一!
央视网消息:国务院南水北调办发布,通过实时监测显示,到今天中午12点,南水北调东线中线一期工程累计输水达到100亿立方米,这些水量,相当于从南方向北方搬运了700个西湖。目前,工程运行平稳,水质稳定达标。
南水北调工程
南水北调是世界上最大的调水工程,东线一期工程2013年实现通水,工程从江苏扬州抽取长江水,一直输送到山东胶东和鲁北地区;中线一期工程2014年实现通水,工程自河南湖北交界的丹江口水库取水,经河南、河北流向北京、天津。受益人口超过一亿。
南水北调中线和东线工程示意图
通水几年来,受水区的生活、生产以及航运、生态等供水保障能力得到增强,同时,地下水开采量压减8亿多立方米,有效遏制了地下水水位下降趋势。2016年北京市地下水位首次出现回升,同比回升0.52米。
目前,北京南水北调配套工程第三阶段建设今年已全面开工。到2020年,北京城市副中心、新机场等重点区域也将用上南水。随着各地配套工程的完善和用水规模的增加,南水北调东中线一期工程每年将具备基本接纳水量180亿立方米的能力。
盘点中国超级工程
港珠澳大桥
港珠澳大桥工程
这是世界上最长的跨海大桥,兼具世界上最长的沉管海底隧道——港珠澳大桥,它将香港、澳门、珠海三地连为一体。工程师们用科技和勇气完成这个工程奇迹,他们要启用世界最大的巨型震锤来完成人工岛的建造,沟通起跨海大桥与海底隧道,这也是一项史无前例的工程。
500米口径球面射电望远镜
500米口径球面射电望远镜
500米口径球面射电望远镜被誉为“中国天眼”,由我国天文学家于1994年提出构想,从预研到建成历时22年,于2016年9月25日落成,开始接收来自宇宙深处的电磁波。借助这只巨大的“天眼”,科研人员可以窥探星际之间互动的信息,观测暗物质,测定黑洞质量,甚至搜寻可能存在的星外文明。
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