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白银公司第三冶炼厂尾矿坝,设计坝高48米,用上游法筑坝。初期坝高18米,用水中填土法筑成。虽然初期坝下游增设贴坡排水,但因排水形式不当,随着子坝堆积,坝体浸润线逐渐增高。当子坝堆高超过初期坝顶10米左右时,坝体浸润线出逸点高出初期坝顶1.0米多。1984年～1989年间坝体连年冲刷破坏,几经整修,并曾试验用竖井(管井)排水降低浸润线,但收效甚微。以至坝顶不能正常放矿,严重影响了企业的正常生产。
The third smelter tailings dam of Baiyin Company, with a design height of 48 meters, used the upstream method to build a dam. The initial dam height of 18 meters, built with water fill method. Although the initial downstream of the dam additional slope drainage, but due to improper drainage form, with the accumulation of sub-dam dam saturation line gradually increased. When the height of the sub-dam is higher than that of the initial crest about 10 meters, the outlet point of the saturation line of the dam body is more than 1.0 meter higher than the initial crest. During 1984-1989, the dam body was scoured successively for several years, and after renovation, it was tested that draining the shaft (pipe well) reduced the infiltration line, but with little effect. Even the top of the dam can not be normal ore, seriously affecting the normal production of enterprises.