山口水电站工程混凝土拱坝施工组织关键技术

Key Technology of Concrete Arch Dam Construction,Shankou Hydropower Project

山口水电站总库容为2.22亿m3,属大Ⅱ等(2)型工程,地处新疆严寒、干旱地区。挡水建筑物为常态混凝土双曲拱坝,最大坝高94 m。大坝采用全级配骨料,可行性研究阶段施工组织设计结合气候、导流度汛、四级配骨料、地形条件等因素针对导流过水围堰、全级配混凝土、大坝浇筑方式、温控等关键技术问题进行了研究。

Shankou Hydropower Project, with the total storage capacity of 2.22 million m^3 , Grade 2B in scale, is located in the extremely cold and dry region, Xinjiang Autonomous Region.The water-retaining structure is the conventional concrete double-curvature dam with maximum height of 94 m.The dam concrete totally applies the fully graded aggregates.At the feasibility study stage, the key technical issues such as overflow cofferdam for river diversion, fully graded-aggregate concrete, dam concrete placement means and temperature control, etc are studied in the construction method statement in combination with local climate, river diversion, flood control, four graded aggregates, landform conditions, etc.