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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 >Numerical simulation of solute transport in a spent heap leach pad
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Numerical simulation of solute transport in a spent heap leach pad

机译：废堆浸出垫中溶质运移的数值模拟

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A mathematical model based on a Set of Partial Differential Equations (SPDE) is used for the simulation of a conservative solute transport in a spent heap leach pad. The model is solved using the MULTIFLUX code configured for the solution of an SPDE. Four equations in the SPDE are found sufficient for adequate modeling solute transport in a heterogeneous rock formation based on comparison to experimental results of a large-scale in situ field test. After calibration of the hydrotransport properties and coefficients of the SPDE model, it is used to predict temporal and spatial concentration variations for an assumed conservative solute in four different, characteristic regimes of a heterogeneous leach pad. The results indicate that the concentration differences between the regimes rapidly diminish with time. The variation of concentration with time is described with an attenuation function and/or coefficient both of which can conveniently be used for the prediction of rinsing time necessary to achieve a given target concentration.
机译：基于一组偏微分方程（SPDE）的数学模型用于模拟废堆浸出垫中的保守溶质运移。使用为SPDE解决方案配置的MULTIFLUX代码来求解该模型。通过与大规模现场试验的实验结果进行比较，发现SPDE中的四个方程足以对非均质岩层中的溶质运移进行建模。在对SPDE模型的水力输送特性和系数进行校准之后，可以使用它来预测异构溶浸垫在四种不同特征区域中假定的保守溶质的时间和空间浓度变化。结果表明，方案之间的浓度差异随时间迅速减小。用衰减函数和/或系数描述浓度随时间的变化，这两者都可以方便地用于预测达到给定目标浓度所需的漂洗时间。

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