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一、基本情况七一水库位于信江上游的主支——金沙溪中游,集雨面积324平方公里,占金沙溪流域面积的64.8％。原总库容1.87亿立方米。水库枢纽由主坝、付坝、溢洪道、输水涵管、隧洞和发电站等组成。主坝长400米,高50米,坝顶高程97.0米(假设高程);溢洪道由五孔6×12米的孤形钢闸门组成,闸底高程82.5米,最大泄洪量4520秒立米;涵管设计总泄量5秒立米;隧洞设计总泄量50秒立米;电站由2×3000和1250千瓦机组组成,总装机7250千瓦。水库以灌溉为主,结合防洪、发电和养鱼、航运等综合效益。该工程于1970年冬进
I. Basic Conditions Qiyi Reservoir is located in the middle reaches of Jinsha River, the main branch of the upper reaches of Xinjiang River. The catchment area is 324 square kilometers, accounting for 64.8% of the area of Jinsha Stream. The original total storage capacity of 187 million cubic meters. Reservoir hub by the main dam, pay dam, spillway, water culverts, tunnels and power stations and other components. The main dam is 400 meters long and 50 meters high with an elevation of 97.0 meters on the crest (assuming an elevation). The spillway consists of 5-hole 6 × 12-meter shaped steel gate with a gate elevation of 82.5 meters and a maximum discharge of 4520 seconds. The total discharge of 5 seconds legislation; tunnel design total discharge of 50 seconds legislation; power station by 2 × 3000 and 1250 kilowatts of units, with a total installed capacity of 7250 kilowatts. The main reservoir irrigation, combined flood control, power generation and fish farming, shipping and other comprehensive benefits. The project entered the winter of 1970