【摘要】 大化水电站经过二十几年运行,水下检查溢流坝下游护坦(二道坝内)冲坑面积近45 m2,最大深度约0.5 m;在二道坝下游底板出现3个大小不等的淘洞,最大淘空体积近5.0 m3。根据破坏区域存在的部位及特殊运行要求,采用水下不分散混凝土对破损进行填补。目前运行良好。更多还原

【Abstract】 After more than 20 years running,the scour holes,with an area of about 45m2 and a maximum depth of about 0.5m,is found at downstream apron(inside the second dam) for overflow dam,and 3 scour holes of different sizes and with maximum scour volume of about 5.0m3 are found at the downstream base slab of the second dam.Non-dispersible underwater concrete is used for repairing the scour holes based on the damaged positions and special operation requirements,which works very well at present.更多还原