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左岸堆石坝左岸堆石坝左接土坝,右连主坝,高40～70米,利用从导流开挖出来的加工量最少的岩石堆筑。因此该堆石坝较混凝土坝或土坝便宜得多。堆石坝的粘土心墙,上游坡为1.0:0.6,下游面是垂直的。坝壳为碾压堆石,上游坡1.0:1.8,下游坡1.0:1.6。上游堆石坝壳与不透水心墙之间设宽度各为2.5米细、祖碎石过渡层。粘土心墙的下游,用2.5米宽的垂直的粗砂反滤层保护,然后依次为2.5米宽的细碎石过渡层、粗碎石过渡层和堆石坝壳(典型横断面见图6)。
Left bank rockfill dam Left bank rockfill dam left dam, right even the main dam, 40 to 70 meters high, the use of diverted from the excavation of the least amount of rock piled up. The rockfill dam is therefore much cheaper than a concrete or earth dam. The core of the rockfill dam has an upstream slope of 1.0: 0.6 and a downstream face that is vertical. Dam shell is compacted rockfill, upstream slope 1.0: 1.8, downstream slope 1.0: 1.6. Between the upstream rockfill dam shell and impermeable wall between the width of 2.5 meters each fine, gravel transition layer. Downstream of the clay core wall, it is protected with a 2.5 m wide vertical grit filter, followed by a 2.5 m wide fine gravel transitional layer, a coarse gravel transitional layer and a rockfill dam shell (typical cross-section is shown in Figure 6 ).