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对于坝基软弱夹层,常用混凝土正塞进行处理,其质量较易控制。在特殊情况下,也采用混凝土倒塞处理坝基软弱夹层,但要达到良好的处理效果,难度却较大,往往由于混凝土收缩和自重的影响,致使倒塞与断层壁脱开而造成处理的失败。陈村水电站大坝基础F_(11)断层处理中,在第7坝块曾采用混凝土倒塞,由于设计和施工中做了细致的分析和处理,多年来,通过预埋的测缝计进行监测,证明收到了预期的效果。
For the dam foundation weak interlayer, commonly used concrete Zheng Cypriot processing, its quality is easy to control. In special cases, concrete sluice treatment is also used to treat the weak foundation of the dam foundation. However, it is more difficult to achieve good treatment effect, which often results in the failure of the slug and the wall of the fracture due to the influence of contraction and self-weight of the concrete . During the F_ (11) fault treatment of the dam foundation of the Chencun Hydropower Station, concrete block plugs were used in the 7th dam block. Due to the careful analysis and handling during the design and construction, monitoring was carried out over the years by the buried sew meter , Proved to have received the expected effect.