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(一) 工程概况王家崖水库总库容9424万立方米,有效库容8750万立方米,死库容450万立方米,坝顶高程605米,正常蓄水位602米,1971年竣工投入运用,由于溢洪道未建闸,使水位未达到正常蓄水位602米,最高只能达到596米。虽在溢洪道上修建高7米土质子堰,为了安全渡汛,汛期水位限制在598米,不能充分发挥效益。1975年子堰溃决,溢洪道底冲毁。加闸改善工程于1978年10月开工,1981年12月竣工,投入运用。加闸工程建成后,增加蓄水量4470万立方米,每年蓄水两次增加总蓄水量8940万立
(I) Project Overview The total storage capacity of Wangjiayacun Reservoir is 94.24 million cubic meters, with an effective storage capacity of 87.5 million cubic meters and 4.5 million cubic meters of dead storage capacity. The dam crest elevation is 605 meters and the normal water storage level is 602 meters. The project was completed and put into operation in 1971. Due to spillway Not built gate, so that the water level did not reach the normal water level of 602 meters, the maximum can only reach 596 meters. Although a 7-meter-high earth weir has been built on the spillway, in order to flood safely, the water level in the flood season will be limited to 598 meters, which will not bring into full play the benefits. In 1975, the weir was broken up and the spillway was destroyed. Floodgate improvement project started in October 1978, completed in December 1981, put into operation. After the completion of the floodgating project, an additional 44.7 million cubic meters of water storage capacity will increase the total water storage capacity by 89.4 million cubic meters