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石砭峪水库位于长安县沣河支流石砭峪河下游,是一座以灌溉为主,结合发电和向城市供水的中型水库,坝高85m,库容2800万 m~3,坝体为定向爆破堆石及上部人工堆石组成,其防渗体采用沥青混凝土斜墙。水库于1971年始建,主体工程于1979年已基本建成,同年9月,下闸蓄水,当水位升至718.7m 时(坝顶高程735.0米),坝后渗漏量突增,达0.85m~3/s。经放水后检查,发现右岸667～700m 高程斜墙与岸边结合处拉裂,缝宽2～4cm,同时,左右岸700m
Shiyangyu Reservoir is located in the lower reaches of Shijieyu River, a tributary of the Bahe River in Chang’an County. It is a medium-sized reservoir that is mainly irrigated and combines power generation and water supply to the city. The dam height is 85m and the storage capacity is 28,000,000 m3. The dam body is a directional blasting pile Stone and the upper artificial rockfill composition, the seepage of asphalt concrete inclined wall. The reservoir was built in 1971 and the main project was basically completed in 1979. In September of the same year, the gate was closed for water storage. When the water level rose to 718.7m (the crest elevation was 735.0 meters), the leakage after the dam suddenly increased to 0.85m ~ 3 / s. After the drainage inspection, found that the right bank of 667 ~ 700m elevation ramp wall and shore junction crack, slit width 2 ~ 4cm, at the same time, the left and right 700m