Water stop structure for peripheral joint of concrete faced rockfill dam: Fid-Bau Portal

Water stop structure for peripheral joint of concrete faced rockfill dam

RAN CONGYONG / BAI YANG / LU YUPING / DOU XIANGXIAN / HE SHUNBIN / JIANG YUANYUAN

The invention relates to the field of earth and rockfill dam construction, in particular to a concrete faced rockfill dam peripheral seam water stop structure which can be adapted to deep and thick covering layer geological conditions or strong earthquake areas, can still keep a good water stop effect when large dislocation is generated between a panel and a toe board due to large uneven deformation of a dam body and a dam foundation. A toe board and inter-panel filler are arranged in a gap between the panel and the toe board, an anti-seepage structure is arranged on the side, facing the water seepage direction, of the gap and isolates the gap from the side, facing the water seepage direction, of the gap, and panel bottom filler is arranged on the side, away from the water seepage direction, of the gap. The panel bottom filler is arranged in a cavity formed by the toe board, the panel inter-panel filler, the panel, the toe board and the asphalt mortar cushion layer, the copper water stop strip is arranged in the panel bottom filler, one end of the copper water stop strip is fixedly arranged in the toe board, and the other end of the copper water stop strip is fixedly arranged in the panel. And the copper water stop strip main body is arranged at the bottom of the panel.

本发明涉及土石坝建筑领域，尤其是一种可以适应于深厚覆盖层地质条件或强地震区域，坝体及坝基较大的不均匀变形导致面板与趾板间产生较大错位，仍然可以保持良好止水效果的面板堆石坝周边缝止水结构，面板和趾板之间的缝隙内设置有趾板和面板间填料，所述缝隙朝向渗水方向一侧设置有防渗结构，防渗结构将所述缝隙与渗水方向一侧隔绝，所述缝隙远离渗水方向一侧设置有面板底部填料，面板底部填料设置于由趾板和面板间填料、面板、趾板以及沥青砂浆垫层所构成的腔室内，铜止水片设置于面板底部填料内，所述铜止水片的一端固定设置于趾板内，所述铜止水片的另一端固定设置于面板内，所述铜止水片主体设置在面板底部。

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