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通水冷却措施是水电工程大体积混凝土采用的一种十分有效的温控措施.但是,冷却通水也是一把双刃剑,控制不好,也会损伤混凝土而开裂.工程中,通常是根据数值计算、工程经验和实测的混凝土内部温度、冷却水的温度来调整通水量.目前,尚无一套简单易行的实施方案,温控过程中容易出现温控参数超标的情况,影响混凝土质量.因此,研究混凝土内部温度与通水量之间的关系以确保工程质量显得尤为重要.以热量守恒定律为基础,结合对工程实测数据的分析归纳,总结出了一套相对简单、实用、高效的公式.可指导编制通水方案,对保证工程质量起着积极的作用.
Water cooling is a very effective temperature control measure for large-volume concrete in hydropower projects, however, the cooling water is also a double-edged sword, which can not be controlled well and can damage the concrete to crack. In engineering, it is usually based on Numerical calculation, engineering experience and the measured concrete internal temperature, cooling water temperature to adjust the water flow.At present, there is no simple and easy implementation of the program, the temperature control process prone to excessive temperature control parameters affect the quality of concrete Therefore, it is very important to study the relationship between internal temperature and water flow in concrete to ensure the quality of the project.According to the law of conservation of heat and the analysis of the measured data, a set of relatively simple, practical and efficient Formula can guide the preparation of water program, to ensure the quality of the project plays a positive role.