各向异性散体介质中的渗流场分析研究
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摘要
在多孔介质地下水动力学的基础上,从矿堆散体介质的渗透特性出发,分析了堆浸工艺中溶浸液渗流运动的规律以及应力场变化对渗流场的影响机理,建立了有关各向异性散体中非稳定渗流的偏微分方程,推导了渗流运动与散体孔隙比的变化关系,得出应力场通过影响散体的体积应变和孔隙率而影响散体的渗透率,从而最终影响渗流场的结论。
Based on the hydrodynamics in porous medium and the permeability characteristics of ore-heap granular medium,the rule of solvent seepage in heap leaching and the mechanism of the change of stress field act on seepage field are analyzed.The partial differential equation for the unsteady-seepage in anisotropic granular medium is established and the relation of seepage varying with void ratio of granular medium is deduced.The conclusion can be drawn that stress field affects granular permeability by impacting its volumetric strain and void ratio and as a result affects the seepage field.
引文
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