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为了了解用分缝分块浇筑法浇筑的混凝土重力坝的安全性，通过一库坝的实测值和传递不同大小应力的数学模型计算，研究了影响纵缝开度的因素，以及应力传递与纵缝开合程度的关系。得知纵缝开合随季节变化，其大小受库水位决定的下游面及坝内温度的影响；除纵缝张开部分外，其闭合部位可以传递压应力和剪应力；且由于纵缝上部的开合，坝内不会产生过大应力，故大坝是安全的。
In order to understand the safety of concrete gravity dam pouring by split-block method, the influence factors of the opening of longitudinal seam are studied through the measured value of a dam and the mathematical model which transmits different size stresses. The degree of opening and closing the relationship. It is found that the longitudinal seam opening and closing changes with the seasons, and its size is affected by the downstream face and the temperature inside the dam determined by the reservoir water level. In addition to the open part of the longitudinal seam, the compressive stress and shear stress can be transmitted through the closed part; The opening and closing, the dam will not have too much stress, so the dam is safe.