【摘要】 渗流分析是堤基安全研究的难点与热点之一。针对双层堤基二向渗流,将其概化为水平面二向渗流问题,探讨双层堤基二向渗流场模型;结合双层堤基渗透稳定判据,采用水平二向渗流有限元法模拟双层堤基渗流场,对某大堤渗流场计算,并与实测值比较,验证本文渗流场计算方法以及渗透稳定判据的可靠性与可行性,在此基础上对双层堤基集中渗透区域的粘性土盖层进行稳定评价以及渗透破坏模式分析,为堤防工程的风险控制提供参考。更多还原

【Abstract】 Seepage analysis is part of the difficult and hot dike safety research. As for the bidirectional seepage problem in double layer foundation, it is generalized as a level bidirectional seepage problem. This paper discusses the model of bidirectional seepage field in double layer foundation, combined with double seepage stability criterion, adopting the level bidirectional seepage finite element method to simulate double layer foundation seepage field. Then, it calculates a levee seepage field, compares with the measured values, and verifies the method to calculate the seepage field and seepage stability criterion of reliability and feasibility. On this basis, this paper analyses the stability evaluation of clay soil cover layer in double layer foundation penetrating region and the seepage failure mode and provides the reference for the risk control of embankment engineering.更多还原