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以叠单元理论为基础,对其前处理及数值积分进行了改进和完善,并将其应用于光照重力坝的渗控优化.对于选取的典型坝段,首先将其划分为考虑廊道和防渗帷幕、不考虑排水孔的整体网格;然后针对各层排水孔,建立其局部网格.由于整体网格和局部网格相互独立,在模拟不同排水孔参数时,整体网格保持不变,只需改变局部网格即可,从而显著减小网格划分难度.工程应用结果表明,叠单元法非常适用于渗流分析中复杂排水系统的精细模拟.
Based on the theory of stacked unit, the pretreatment and numerical integration are improved and perfected, and applied to seepage control optimization of light gravity dam. For the typical dam section selected, Seepage curtain, irrespective of the overall grid drainage hole; and then for each layer of drainage holes, the establishment of its local grid.Because the overall grid and local grid independent of each other in the simulation of different drainage parameters, the overall grid remains unchanged , It is only necessary to change the local grid, which can significantly reduce the difficulty of meshing.Application results show that the stacked element method is very suitable for the fine simulation of complex drainage system in seepage analysis.