仙居抽水蓄能电站地下厂房混凝土施工温度控制

Temperature Control of Concrete Construction at Underground Powerhouse of Xianju Pumped Storage Power Station

仙居抽水蓄能电站安装4台单机容量为37.5 MW的立轴单级混流可逆式水轮发电机组,电站地下厂房长176 m,宽25 m,高51.5 m。其中厂房结构混凝土分为尾水管层、蜗壳层、水轮机层、中间层、发电机层,厂房混凝土施工具有工程量大、工期紧、施工强度高、工序多、高温季节施工等特点。对施工过程中采取的温度控制措施进行了阐述,保证了厂房混凝土温度控制满足设计要求,所取得的经验可为类似工程提供参考。

Xianju Pumped Storage Power Station is equipped with 4 vertical shaft single-stage mixed flow reversible water turbine generators with a single unit capacity of 37.5mw.The underground powerhouse of the power station is 176m long,25m wide and 51.5m high.The structural concrete of the powerhouse is divided into tailrace layer,volute layer,turbine layer,middle layer and generator layer.The concrete construction of the powerhouse is characterized by large quantities,tight construction period,high construction intensity,various working processes and construction in high temperature season and etc.The temperature control measures taken in the construction process are described,which ensures that the concrete temperature control of the powerhouse meets the design requirements.The experience obtained can provide reference for similar projects.