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根据大坝钢筋砼面板设计、施工、运行中的一些情况 ,提出面板产生裂缝原因为 :坝体垫层填筑和面板砼施工质量缺陷 ;坝肩地形陡削坡未能平缓连接形成应力集中 ;下库特殊运行条件水位日变幅 3 0余米 ,面板结构设计未合理加强。裂缝处理宜用柔性材料封闭 ,既可防渗又能适应裂缝张合变形
According to some situations in the design, construction and operation of the reinforced concrete face of the dam, the causes of the cracks in the faceplate are proposed as follows: the filling of the dam body cushion and the construction quality of the faceplate; the steep slope of the abutment shoulder can not be gently connected to form the stress concentration; Under the special operating conditions of the next day water level 30 meters, the panel structure design is not reasonable to strengthen. Crack treatment should be closed with a flexible material, both anti-seepage can adapt to crack Zhang Zhang deformation