Tailings reservoir is the supporting project and an important part of the mining and selecting project. If the dam failure occurs, it will cause unpredictable loss and casualties. So it is necessary to reinforce the auxiliary dam. This paper mainly introduces the reinforcement design of the tailings dam of Anning City in Kunming. The design uses high pressure jet grouting pile, retaining wall, steel pipe pile, gravel soil anti pressure to carry out the reinforcement, which solves the problem of the stability of the auxiliary dam heightening, ensures the safe operation of the tailings.%尾矿库是采选工程项目的配套工程,也是其重要的组成部分.若尾矿库坝体发生溃坝,将造成无法预测的损失和人员伤亡,因此对副坝进行加固设计十分必要,本文重点介绍了昆明安宁市某尾矿库副坝加固设计,设计采用高压旋喷桩、扶壁式挡土墙、钢管桩、碎石土反压方案进行加固,解决了副坝加高后稳定性的问题,保证了尾矿库的安全运行.
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