摘要
研究了蓄水水位对横缝开度的影响,确定坝前允许最高水位以满足灌浆需要是工程上亟待解决的问题.推导了上游水压作用下横缝宽度变化量的计算公式,并采用模拟拱坝浇筑、灌浆和蓄水过程的有限元仿真方法,研究不同蓄水水位对横缝开度的影响.结果表明,当水位达到距灌浆区底部高程以下30～40 m时,水压对缝宽的压紧闭合效果开始变得显著.
It is disadvantage to joint grouting that the transverse joints are jam-packed by water pressure after impounding. The formula estimating closure of transverse joints aperture under water pressure are deduced. In order to demonstrate the effect of different impounded water level on transverse joint aperture, the transverse joints aperture under different impounded water level is predicted by simulation analysis. It is concluded that the influence of water pressure on closure of transverse joints becomes significant when the impounding water reaches the level lower than the grout compartment from 30 to 40m.
出处
《水电能源科学》
2005年第4期38-40,75,共4页
Water Resources and Power
关键词
高拱坝
蓄水水位
横缝开度
仿真分析
high arch dam
impounded water level
transverse joints aperture
simulation analysis
