那比水电站碾压砼重力坝高温季节施工温控技术  

Temperature control technology for hot-season RCC gravity dam construction of Nabi Hydropower Station

作　　者：华荣孙 

机构地区：[1]中国水利水电第十六工程局有限公司,福建福州350014

出　　处：《广西水利水电》2013年第6期29-32,共4页Guangxi Water Resources & Hydropower Engineering

摘　　要：那比水电站大坝为碾压混凝土重力坝,最大坝高68.5 m,大坝混凝土总量为28.9万m3,其中碾压砼22.7万m3。大坝从2010年4月底开始第一仓碾压砼施工,高温季节碾压砼施工采用自然温度入仓,温控主要采用预埋水管通河水冷却措施,2011年3月大坝碾压混凝土已经浇筑到设计高程,目前大坝已经过两个冬季的温度变化考验,碾压砼大坝未发现温度裂缝,满足设计温控要求。介绍了那比水电站碾压砼重力坝高温季节施工温控技术。Nabi Hydropower Station is designed with a RCC gravity dam which has the maximum height of 68.5m, total concrete quantity of 289 thousand m^3, including RCC of 227 thousand m3. The RCC construction of main dam started from the end of April 2010. In hot season, concrete was cooled with river water through the embedded pipes which permits RCC construction was conducted at natural temperature. The construction of main dam RCC was com- pleted up to the designed elevation in March 2011. The RCC main dam has withstood temperature variation of two winters up to now, without temperature crack founded and up to the design temperature control requirements. An in- troduction was made on the temperature control technology for hot-season RCC gravity dam construction of Nabi Hydropower Station.

关 键 词：碾压混凝土 高温季节 常温入仓 河水冷却 那比水电站 

分 类 号：TV544.921[水利工程—水利水电工程]