Abstract: In order to control the concrete pouring temperature of the sluice gate of the Nianpanshan Water Conservancy Project, and meet the requirements of the sluice gate's mass concrete entering temperature. Before the construction of the sluice sluice project, the concrete temperature control plan and design and calculation are carried out. During the construction period, the method of dynamic concrete temperature monitoring and real-time control is adopted according to the pouring schedule. Through calculation, the calculation results such as the maximum adiabatic temperature rise value of the sluice sluice concrete, the sluice sluice concrete center temperature value, the sluice sluice concrete surface temperature value, the sluice sluice concrete surface insulation material thickness value and other calculation results are obtained, which are analyzed and compared with the monitored raw material temperature monitoring value, the temperature monitoring value, the water cooling monitoring value of concrete in warehouse, the pouring silo temperature value, and the insulation temperature monitoring value. The resalts show the extreme maximum temperature in July, the large water height difference during the same period, and big difficuty in concrete temperature control due to frequent temperature drops. Based on the actual situation, the project adopts technical measures such as avoiding the parts with strict requirements for temperature control during the high temperature period, configuring sufficient refrigeration capacity of the cold water station, and timely covering the water surface after closing the warehouse to control the difficulty of concrete temperature control, which provides a certain theoretical and practical basis for temperature control in other mess concrete projects .

Key words: concrete temperature, temperature control, temperature control measures

摘要： 为了控制碾盘山水利枢纽工程泄水闸混凝土浇筑温度,满足泄水闸大体积混凝土入仓温度的要求,在泄水闸工程施工前进行混凝土温度控制规划并进行设计和计算,在施工期根据浇筑进度采用动态混凝土温度监测和实时控制的方法。通过计算,得到泄水闸混凝土最大绝热温升数值、泄水闸混凝土中心温度数值、泄水闸混凝土表面温度数值、泄水闸混凝土表层保温材料厚度值等计算成果,与监测的原材料温度监测数值、仓内混凝土温度监测数值、通水冷却监测数值、浇筑仓气温数值、保温层温度监测数值进行分析比对,其中7月极端最高气温、同一时段通水高差大、气温骤降频繁为混凝土控温难度大因素。结合实际,工程采用避开高温时段开浇温控要求严的部位、配置足量冷水站制冷容量、收仓后水平面及时覆盖等技术措施,对混凝土温控的难点进行控制,为其它大体积混凝土工程温度控制提供了一定的理论和实践依据。

关键词: 混凝土温度, 温度控制, 温控措施