在渗流作用下．土体细颗粒沿骨架颗粒形成的孔隙，水在土孔隙中的流速增大引起土的细颗粒被冲刷带走的现象。也称翻沙鼓水。涌水口径小者几厘米．大者几米，孔隙周围多形成隆起的沙环。
管涌对水库大坝的危害及处理_建筑设计论文 关键词：水库大坝，管涌，水利工作 [gap=829]Keywords: reservoir dam, piping, water conservancy work
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The mechanism and current status about piping and the numerical method of DEM are presented. At first, the forces between particles are considered, and the deformation and displacement of particles caused by the forces are calculated.
介绍管涌的机理及研究现状以及离散元的数值方法。
参考来源 - 运用离散单元法研究土体管涌机理初探·2,447,543篇论文数据，部分数据来源于NoteExpress
悬挂式防渗墙能显著提高堤基抵抗管涌破坏的能力，且防渗墙布置在堤防下游侧比上游侧更有效。
Suspended cut-off wall can effectively increase foundation resistance to piping and it is more efficient when it is situated in land side than in river side.
因此研究管涌机理，并在此基础上研究悬挂式防渗墙对双层堤基管涌的控制效果，具有重要的现实意义。
Therefore, it is very necessary and practical to study the mechanism of dike foundation piping and the effect of suspended cut-off wall.
本文对管涌地层构造和层状管涌进行了分析。
Analysis was made on piping stratum structure and stratified piping.
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