基于室内土工试验和有限元数值模拟,结合以往历史资料,对某长江2级堤防进行险情原因分析。根据现场查勘情况,以及堤顶、堤脚、滩地三处土体物理力学指标的差异,综合判断堤防险情是由堤基的不均匀沉降引起的,并结合数值模拟排除了大堤的失稳问题。 Based on the indoor geotechnical test and finite element numerical simulation, combined with the historical data, the cause analysis of a Grade 2 dike in the Yangtze River is carried out. According to the site survey and the differences of physical and mechanical indexes of the soils at the embankment, embankment and beach, it is concluded that the embankment danger is caused by the uneven settlement of embankment, and the instability problem of the embankment is excluded by numerical simulation.