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利用颗粒流(PFC)方法建立了土工织物PFC反滤模型,从细观层面分析了具有土工织物反滤结构的土体中水流挟持颗粒移动的特点及影响因素,探讨了PFC方法应用中引发的误差问题,并提出了解决方案。通过正交试验法分析了多因素影响下土工织物颗粒流反滤模型的孔隙率变化敏感性,进一步验证了土工织物淤堵试验中出现的渗透系数“峰值”现象及其产生的原因。
The PFC filtration model of geotextile was established by using particle flow (PFC) method. The characteristics and influencing factors of water entrapment particles in soils with geotextile filtration structure were analyzed at the mesoscopic level. The effects of PFC method on Error problem, and put forward a solution. The orthogonal experiment was used to analyze the change of porosity of geotextile particle flow filtration model under the influence of multiple factors. The permeability coefficient “peak ” appeared in geotextile clogging test was further verified.