Central line formula tailings dam

The utility model provides a central line formula tailings dam belongs to antiseepage of dam body technical field. This central line formula tailings dam includes: initial stage earth rockfill dam with central core, pile and build the sub - dam of dam body on the initial stage earth rockfill dam with central core, and lay the bentonite waterproof blanket at the sub - dam of dam body middle part. This is open through during building at the sub - ba dui of dam body, lays bentonite waterproof blanket at dam crest dam middle part to reduce dam low reaches saturation line, reduce the low reaches water percolating capacity, and then reduce construction of tailing storehouse and running cost. 本公开提供种中线式尾矿坝，属于坝体防渗技术领域。该中线式尾矿坝包括：初期心墙土石坝；堆筑在所述初期心墙土石坝之上的坝体子坝；以及铺设在所述坝体子坝中部的膨润土防水毯。本公开通过在坝体子坝堆筑期间，在坝顶子坝中部铺设膨润土防水毯，从而降低坝下游浸润线，减少下游渗水量，进而降低尾矿库建设和运行成本。