试验中概化了高塑性粘土保护层与混凝土防渗墙之间的接触冲刷过程,模拟了心墙与混凝土防渗墙连接部位过渡区粘土的应力状态和渗流状态,对比了超固结土体与普通土体的渗透性。结果表明,超固结土体在短时间内渗透性明显下降,下降的程度与土体所处的工作应力状态有关,且随时间增长,超固结土渗透性有逐渐恢复的趋势,为高塑性粘土经不同应力历史后的工作状态预测提供了依据。 The process of contact erosion between high plasticity clay protective layer and concrete cutoff wall is summarized and the stress state and seepage state of clay in the transitional area between the core wall and concrete cutoff wall are simulated. Permeability with ordinary soil. The results show that the permeability of overconsolidated soil decreases obviously in a short period of time, and the degree of descending is related to the working stress state of the soil. With the increase of time, the permeability of overconsolidated soil tends to gradually recover and becomes high Plastic clay after different stress history provides a basis for the prediction of working conditions.