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羊毛湾水库位于乾县石牛乡、漆水河中游。土坝始建于1958年,中途停建,至1973年建成,坝高47.6米,坝长488米。坝基为灰岩,裂隙、溶洞发育,地质情况较复杂。土坝建成后,水库管理局建立了位移观测系统,由于不符合《水工建筑物观测工作手册》的要求,1982年重新建立位移观测系统,按视准线法布设,在大坝上布设了五排观测点,每排两岸各布设了两个工作基点(第一排在迎水坡,右岸受地形限制,未布设工作基点),作为相互检校之用。自1982年建立观测系统以来,水库管理局进行了定期观测,观测点水平位移最大达12.7厘米,垂直位移最大达23.1厘米,工作
Wool Bay Reservoir is located in Shixiu County, dry County, River midstream. Built in 1958, the earth dam was suspended from construction until 1973, with a dam height of 47.6 meters and a dam length of 488 meters. Dam foundation is limestone, fissure, cave development, the geological situation is more complicated. After completion of the earth dam, the reservoir management bureau established a displacement observation system. Due to the failure to meet the requirements of the Manual for Observation of Hydraulic Structures, the Displacement Observation System was re-established in 1982 and laid out according to the line of sight method. Five rows of observation points, each row of the two sides of the laying of two working points (the first row at the water slope, the right bank by the terrain constraints, not laying a working point), as a mutual calibration purposes. Since the establishment of the observation system in 1982, the Reservoir Administration has conducted regular observations with a horizontal displacement of up to 12.7 cm and a vertical displacement of up to 23.1 cm at the observation points,