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一、以礼河梯级水电站进水口的防沙防污 以礼河梯级电站是我国第一座跨流域开发的高水头电站。全梯级共有二库四个电站,(见图1)具有一库调节多级利用的特点。四个电站厂房均为地下式,总装机容量为32.2万千瓦,多年平均发电量为16亿度。一级毛家村水库具有多年调节性能,二级水槽子为周调节水库。三级盐水沟和四级小江为日调节水库,均系高水头电站,其装机容量各为14.4万千瓦,占全梯级89.4％。 1956年7月水槽子电站动工兴建,1958年8月发电,盐水均,小江和毛家村电站分别于1966年、1970年、1971年相继发电。在系统中担任全部尖峰和部分备用,设备已逐步得到利用。截止1979年底已为国家提供了117.15亿度电能,梯级电站的投资已全部收回,投资回收年限为7.5年。
First, to Li River Cascade Hydropower Station inlet anti-sand Fangzai to Li River Cascade Power Station is China’s first inter-basin development of high head station. The entire cascade total of two library four power plants, (see Figure 1) has a multi-level library to regulate the use of features. The four power plants are underground type, with a total installed capacity of 322,000 kilowatts, the average annual generating capacity of 1.6 billion degrees. A Maojiacun reservoir has many years of regulatory performance, two sub-tank for the weekly regulation of reservoirs. The tertiary saltwater ditch and the fourth grade Xiaojiang are day-adjusting reservoirs, each of which is a high-head hydropower station. Each of its installed capacity is 144,000 kilowatts, accounting for 89.4% of the entire grade. In 1956 July sinks sub-station construction started construction in August 1958, power generation, brine, small river and Maojiacun power plants in 1966, 1970, 1971, respectively, one after another power generation. In the system as a full spike and some spare, equipment has been gradually used. By the end of 1979, the country had provided 11.715 billion kWh of power. The investment in cascades has been fully recovered with an investment recovery period of 7.5 years.