今日热词打卡
三峡工程
the Three Gorges project
水利部、国家发展改革委公布,三峡工程日前完成整体竣工验收全部程序。
China's Ministry of Water Resources and the National Development and Reform Commission announced the official full completion of the project's construction, saying it has met all design requirements, has a good overall performance, and fulfills the key roles of flood control, electricity generation, shipping and water-resource utilization.
水利部、国家发展改革委公布,三峡工程建设任务全面完成,工程质量满足规程规范和设计要求,运行持续保持良好状态,防洪、发电、航运、水资源利用等综合效益全面发挥。
【知识点】
三峡工程(the Three Gorges project)全称为长江三峡水利枢纽工程。整个工程包括一座混凝重力式大坝(concrete gravity structure),泄水闸(sluice gate),一座堤后式水电站(hydropower station at dam toe),一座永久性通航船闸(navigation lock)和一架升船机(lifter)。
三峡工程建筑由大坝、水电站厂房和通航建筑物三大部分组成。大坝坝顶总长3035米,坝高185米。
三峡工程是迄今为止世界上规模最大的水利枢纽工程(the world's biggest water conservancy project)和综合效益最广泛的水电工程(a hydropower project with widespread benefits)。
监测表明,拦河大坝及泄洪消能(flood drainage)、引水发电(water diversion and power generation)、通航(navigation)及茅坪溪防护工程等主要建筑物工作性态正常,机电系统及设备、金属结构设备运行安全稳定。
▌防洪
By the end of August, the dam had held back 180 billion cubic meters of water during flood seasons. It saw inflows of over 70,000 cubic meters per second in 2010, 2012 and this year and reduced flood peaks by about 40 percent, the review said, greatly easing flood-control pressure in downstream rice-growing areas.至2020年8月底,三峡水库累计拦洪总量超过1800亿立方米。2010年、2012年、2020年入库最大洪峰均超过70000立方米每秒,经过水库拦蓄,削减洪峰约40%,极大减轻了长江中下游稻米产区防洪压力。