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一、概述拱坝较薄,受温度影响比较敏感,特别是寒冷地区计算出的温度应力很大,往往超过水压力。青沟水库浆砌石拱坝在设计上限制封拱时间,采用低温封拱,大大降低了温度应力。青沟水库位于吉林省东南部浑江支流青沟河河口,在浑江市八道江镇西北2.5公里处。处于东径126°23′,北纬41°56′。气候寒冷,平均年最高气温23.5℃,平均最低气
First, an overview Arch dam is thinner, more sensitive to temperature, especially in cold areas calculated temperature stress is large, often over water pressure. Qinggou Reservoir masonry arch dam in the design limit closure arch time, the use of low temperature arch closure, greatly reducing the temperature stress. Qinggou reservoir is located in southeastern Jilin Province Hunjiang tributary of Qing ditch estuary, 2.5 km northwest of Badaogan Town, Hunjiang City. Located at 126 ° 23 ’east and 41 ° 56’N. Cold climate, the average annual maximum temperature of 23.5 ℃, the lowest average gas