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大体积混凝土坝的散热问题是如何解决大型水利枢纽建设速度的关键问题之一。本文从温度应力的观点说明考虑到基础变形、早期压应力、徐变及塑性变形等因素,注块的允许温差可以较目前采用的数值适当提高。再加上充分利用低温季节,大量埋入块石,沿主应力做斜缝及人工冷却等技术措施,便有可能大大加快混凝土坝的建筑,使我国水利水电建设的速度发生一个飞跃。
Mass concrete dam cooling problem is how to solve the speed of construction of large-scale water conservancy hub one of the key issues. In this paper, from the point of view of thermal stress, considering the factors of basic deformation, early compressive stress, creep and plastic deformation, the allowable temperature difference of block can be properly increased compared with the current values. Coupled with the full use of low-temperature seasons, a large number of embedded rock, slab along the main stress and artificial cooling and other technical measures, it is possible to greatly accelerate the construction of concrete dams so that China’s water conservancy and hydropower construction speed of a leap.