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天桥电站是黄河北干流上第一座径流电站.枢纽布置如图1、图2所示。该电站1970年4月开始兴建,1977年2月第一台机组正式投入运用,至1978年7月四台机组全部投产。由于基础处理(化学灌浆部分)工程未完,初期运用水位控制在829～830米,1979年底抬高至832米,尚低于正常水位2米。四年来已发电九亿多度,除供本地区用电外,均输入太原电网,担任系统峰荷,起到了调峰作用,为工农业建设作出了一定的贡献。该枢纽正常高水位834米,相应库容0.66亿立米,多年平均径流量267亿立米,多年平均输沙量3.51亿吨,实测最大含沙量1190公斤/立米,最大洪峰流量10700秒立米,设计洪水下
Tianqiao Power Station is the first runoff power station on the north of the Yellow River, and the layout of the hub is shown in Figure 1 and Figure 2. The plant was started construction in April 1970 and the first unit was put into operation in February 1977. All four units were put into operation in July 1978. As the basic treatment (chemical grouting part) project is not completed, the initial use of water level control in the 829 ~ 830 meters, by the end of 1979 raised to 832 meters, is still below the normal water level of 2 meters. Over the past four years, it has generated more than 900 million degrees of power. Except for the electricity supply in this area, it has been input into the Taiyuan Power Grid as the peak load of the system and played a role of peak shaving. It has made a certain contribution to the industrial and agricultural construction. The hub has a normal high water level of 834 meters and a corresponding storage capacity of 66 million cubic meters. Its annual average runoff is 26.7 billion cubic meters. Its annual average sediment transport is 351 million tons. Its maximum sediment concentration is 1190 kg / under