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在挪威北部进行了一系列关于渗流、稳定和溃坝的现场试验,这些试验在不同材质的一系列土石坝中进行。其中一座均质堆石坝,长35m,高6.3m,坝顶宽2.8m,在坝体内发生了紊流渗流。在假定坝体材料为各向同性的多孔介质的前提下,开发了紊流渗流的流量、浸润面的二维解析法,用CFD软件FLUENT进行了数值模拟计算,找出了最佳适配的紊流透水系数,并将解析法和数模计算的结果和现场测量的数据进行了比较。能正确预测紊流渗流是非常重要的,它是影响边坡稳定计算、颗粒冲刷和下游加固措施的重要因素。
A series of field trials on seepage, stabilization and dam breakage were conducted in northern Norway, conducted in a series of earth-rock dams of different materials. One of the homogeneous rockfill dam, long 35m, high 6.3m, crest width 2.8m, occurred in the dam turbulent seepage flow. Based on the assumption that the dam material is isotropic porous medium, a two-dimensional analytic method of flow and infiltration surface of turbulent seepage flow is developed. Numerical simulation is performed with CFD software FLUENT to find the best fit Turbulent flow coefficient, and the results of analytic method and numerical simulation are compared with the data measured in the field. Correct prediction of turbulent seepage is very important, which is an important factor that affects the calculation of slope stability, particle erosion and downstream consolidation measures.