中文摘要：

在土层厚度随时间变化固结方程基础上，引入连续排水边界条件，推导并初步验证了孔压及平均固结度公式，探讨了吹填土工程中边界透水性随时间变化的底部边界与不排水边界的区别与联系，Gibson的平均固结度公式的限制条件。针对工程中或采用的底部负压排水的情况，引入连续排水边界，对不同工况的平均固结度进行了分析。总体而言，对土层厚度随时间变化的平均固结度进行了一定深度的研究，所得结论具有一定的理论研究意义和工程参考价值。

英文摘要：

Based on the solution of consolidation equations in which the soil layer thickness changes with time, this paper introduces continuous drainage boundaries, deduces and preliminarily proves the formula of pore pressure distribution and the formula of the average degree of consolidation, discusses the difference and connection between continuous drainage boundaries whose permeability changes with time and the undrained boundary in dredger fill engineering, the constraints of the Gibson formula for the average degree of consolidation In view of the possible situation that negative pressure drainage system were located in the bottom boundary, a continuous drainage boundary was introduced to analyze the average degree of consolidation in different cases. Overall, the average degree of consolidation about soil layer thickness changing with time was studied in a certain depth. The conclusion has a certain theoretical significance and engineering reference value.