尾矿库尾矿沉积特性对坝体稳定性的影响分析

摘要

通过Slide软件对云南某尾矿坝在考虑沉积特性或未考虑沉积特性时对其稳定性的影响进行了研究.描述了当前尾矿库在初步设计时没有考虑尾矿的沉积特性的现状,指出采用这种方式建立坝体模型后计算出来的坝体稳定性与实际情况不符.通过在三种条件下尾矿库正常运行、尾矿库洪水运行和尾矿库特殊运行对比分析得出考虑沉积特性的尾矿库坝体稳定性比未考虑沉积特性的坝体稳定性好,同时分析了在考虑沉积特性时对坝体稳定性影响机理,为相关尾矿库的建设运营提供更好的理论基础.%Applying Slide software, the stability of a tailings dam of Yunnan is analyzed by including and excluding the sediment characteristics. The dam stability calculated by establishing a model is not in conformity with the actual situation for the original design has not taken the sediment features into account. The contrastive analysis on the dam stability under three different conditions, including normal operation, flooding operation and special performance, shows that the dam stability design which considers sediment characteristics is better than that exclude sediment features. The effect mechanism on the dam stability is discussed.