景洪水电站碾压混凝土温控防裂措施及组织管理

Temperature control and anti-cracking measures for RCC construction and management at Jinghong Hydropower Station

针对景洪水电站水文气象条件、施工特点,以及上下游围堰和右冲坝段碾压混凝土温度控制标准,介绍景洪水电站纵向围堰高温季节碾压混凝土施工过程中采取的具体温控措施,以及业主在温控组织管理工作中采取的措施。对各项温控措施成效的统计分析表明,景洪水电站温控工作基本取得了预期成效,纵向围堰碾压混凝土至今未发现危害性的温度裂缝。

In consideration of the hydrological and meteorological conditions, the construction characteristics, and the temperature control standard of RCC for cofferdams on upper and lower reaches and for right dam sections, an introduction was given to special temperature control and management measures adopted in RCC construction of longitudinal cofferdams at Jinghong Hydropower Station during the high temperature period. The statistical analysis shows that the temperature control measures have achieved expected result without any temperature-induced harmful cracks occurring in the longitudinal cofferdams.