渗流场求解的改进排水子结构法 English Version
Solution to Seepage Field Problem with the Technique of Improved Drainage Substructure
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摘要: 针对排水孔孔径小、数目多及渗流自由面位置未知的特点，把能准确模拟排水孔实际渗流行为的改进排水子结构技术与固定网格求解有自由面渗流问题的结点虚流量法相结合，解决了排水孔穿过自由面时渗流场的求解问题。作为推广应用，列举了几种典型的排水子结构模式，给出了两个应用算例Abstract: The installation of drainage relief holes is one of the important practical measures for seepage and stability control in geotechnic engineering. But due to the numerous holes, their small diameters, and the unknown location of the free surface, the correct solution and analysis of a seepage field including drainage holes intersecting the free surface have still been a complicated problem. On the basis of the previous research work,the technique of drainage substructure is introduced into the numerical procedure of nodal point virtural flow rate to solve the above mentioned problem of free surface seepage flow with an unvariant finite element mesh. Meanwhile, many typical drainage substructures are also presented instructively. Finally, two examples analysed with the technique are illustratively given.
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