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坝高作为橡胶坝的一项重要参数,对橡胶坝塌坝泄水和立坝蓄水具有显著影响。通过物理模型试验的方法设计6种坝高的充水式橡胶坝,对影响坝高的主要因素坝袋充水量和堰顶水头进行试验研究并分析其间的关系,拟合出经验公式。结果表明,橡胶坝坝高随坝袋充水量的增加而变高;当实际坝高未达到设计坝高时,在同一坝袋充水量下,坝高随堰顶水头的增大而变高;当实际坝高等于设计坝高时,堰顶水头对坝高的影响变小,坝高几乎不再随堰顶水头变化。
As an important parameter of rubber dam, dam height has a significant influence on the slump discharge of rubber dam and the water storage of dam. Six kinds of water filling type rubber dam with dam height were designed by physical model test. The main factors influencing the height of dam were filled with water and the top of weir were tested and analyzed. The empirical formula was fitted. The results show that the height of rubber dam increases with the increase of filling amount of dam bag. When the actual height of dam does not reach the height of designed dam, the height of dam increases with the increase of the head of weir at the same dam load. When the actual dam height is equal to the designed dam height, the influence of the weir top head on the dam height will be smaller and the dam height will almost no longer change with the top of the weir.