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首页> 外文会议>Eighth International Conference on Tailings and Mine Waste '01, Jan 16-19, 2001, Fort Collins, Colorado, USA >Slope stability performance of high heap fill structures for closure
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Slope stability performance of high heap fill structures for closure

机译：高堆填区封闭结构的边坡稳定性能

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The exterior slopes of high heap fill structures are typically constructed as steep as practical during mining operations to maximize the amount of ore tonnage on the geomembrane-lined leach pad foundations. The maximum allowable heap slope angle is determined in design stability analyses for maintaining stable slope conditions to the planned ultimate heap height. A major environmental concern for closure is the long-term slope stability performance of the relatively high granular fill structures at the end of operations. This paper presents a post-mining slope stability study of heap fill slopes after completion of ore lift loading and leaching operations. The study considers the operational change in heap fill strengths and geomembrane liner interface strengths with respect to high fill loads. This study shows that the post-mining heap slope stability for closure should increase with time, which is in agreement with the historical performance of geomembrane-lined fill structures.
机译：高堆填结构的外部坡度通常在采矿操作期间构造得尽可能陡峭，以使衬有土工膜的浸出垫基础上的矿石吨位最大化。在设计稳定性分析中确定最大允许堆坡角，以将稳定的斜坡条件保持在计划的最终堆高。封闭的主要环境问题是操作结束时较高颗粒填充结构的长期边坡稳定性能。本文提出了矿山提升边坡的矿山后边坡稳定性研究，该过程完成了矿石提升机装载和浸出操作之后。该研究考虑了相对于高填充载荷的堆填填充强度和土工膜衬砌界面强度的运行变化。这项研究表明，采矿后堆放场的边坡稳定性应随时间增加，这与土工膜衬砌填充结构的历史性能是一致的。

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