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1的自混凝土面板堆石坝（简称面板坝）具有工期短、投资省、施工方便、安全可靠等诸多优点，因而被世界各国广泛采用，目前的发展趋势是建200～300m高坝．面板坝在水库蓄水过程中，周边缝的止水结构要承受趾板和面板间相对较大的三向变位，容易遭到破坏，形成面板坝防渗体结构?
1 self-facing concrete faced rockfill dam (referred to as the face plate dam) has many advantages such as short construction period, investment saving, construction convenience, safety and reliability, and has been widely adopted by all countries in the world. The current development trend is to build a dam of 200-300m in height. In the course of water storage of the dam, the water-stop structure of the perimeter seam should withstand the relatively large three-dimensional displacement between the toe plate and the face plate, and be easily damaged so as to form the seepage dam structure of the dam.