红花湖水库取水竖井位于主坝右岸放水隧洞前端，为“日”字形钢筋混凝土结构。其前井为检修闸门启闭井，后井为隧洞进入及通气井。井高23．0m，井壁为厚50cm钢筋混凝土水下墙，如图1。由于施工时存在缺陷，水库蓄水后于35．7m高程施工缝处有水流冒出，漏水冒出点沿施工缝分散分 The water intake shaft of Honghua Lake Reservoir is located at the front of the diversion tunnel on the right bank of the main dam and is a “day” shaped reinforced concrete structure. The former well is a floodgate for maintenance gates, a tunnel for later access and a ventilation well. Well height 23.0m, wall thickness of 50cm reinforced concrete underwater wall, shown in Figure 1. Due to defects in construction, after the impoundment of the reservoir, a water flow emerges at a construction seam with a height of 35.7m, and a leakage point will emerge along the construction seam to disperse points