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首页> 外文期刊>Journal of the South African Institution of Civil Engineering >A numerical investigation on hydro-mechanical behaviour of a high centreline tailings dam
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A numerical investigation on hydro-mechanical behaviour of a high centreline tailings dam

机译：高中线尾矿坝水力力学特性的数值研究

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The high rate of failure in tailings dams reflects the inadequacy of conventional stability and seepage analyses for evaluating their performance, especially during construction. In this article, the hydro-mechanical behaviour of a high centreline tailings dam during staged construction is evaluated by coupled stress-pore pressure analyses. The effects of factors such as foundation permeability, raising rate, anisotropic permeability of slimes and changes in the slope of dykes on the structural response are investigated. In these analyses, a combination of realistic conditions, including saturated-unsaturated seepage of materials, consolidation and loading due to staged construction are simulated using SIGMA/W software. The results of this study indicate that foundation permeability and anisotropic permeability of slimes have a significant influence on development of pore pressure in impoundment, while changing the downstream slope of dykes causes substantial displacements.
机译：尾矿坝的高破坏率反映出常规稳定性和渗流分析不足以评估其性能，尤其是在施工期间。在本文中，通过耦合的应力-孔隙压力分析评估了高中心线尾矿坝在分阶段施工过程中的流体力学行为。研究了地基渗透率，升高速率，黏土各向异性渗透率和堤坝坡度变化等因素对结构响应的影响。在这些分析中，使用SIGMA / W软件模拟了实际条件的组合，包括饱和到不饱和的材料渗透，分阶段施工引起的固结和荷载。这项研究的结果表明，黏土的地基渗透率和各向异性渗透率对蓄水过程中孔隙压力的发展有重大影响，而改变堤坝的下游坡度会引起大量位移。

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