西班牙阿斯纳科利亚尔（Ａｚｎａｌｃｏｌａｒ）尾矿坝溃决造成２～２．５亿美元损失。这座泥浆池库容约１５０万ｍ３，围堰长４１００ｍ，包括一座横向堤坝将该泥浆池一分为二。这些堤坝用堆石筑成，覆盖７ｍ厚的粘土层，密度为１．８４ｔ／ｍ３；上游侧设膨脱土截水墙，... The collapse of the Aznalcolar tailings dam in Spain caused a loss of between 250 and 250 million U.S. dollars. The mud pool has a storage capacity of about 1.5 million m3 and a cofferdam 4100 m long, including a horizontal dike dividing the mud pool in two. These dams are built of rockfill, covering 7m thick clay layer with a density of 1.84t / m3;