中文摘要：

在Rowe和Fleming提出的用以计算淤堵时间简化模型的基础上，针对填埋场排水层淤堵时空分布特征，合理地作了进一步假设和推导，得到了可以反映淤堵发展的简化模型，推导出了排水层渗透系数的变化规律。采用水量平衡的单元分析方法，建立了淤堵条件下最高水位计算模型，获得了排水层最高水位深度的计算方法，并与稳态、瞬态方法进行比较。结果表明，无淤堵时得到的结果与瞬态结果一致，且都趋于稳态结果；淤堵较严重时水位受到显著影响，必须考虑淤堵。通过参数分析发现，前期渗透系数越小（后期越大）、排水距离越长、入渗速度越快、离子浓度越高，则淤堵对水位的影响越严重，同时提出考虑淤堵条件下改进排水系统的设计建议。

英文摘要：

Based on the simplified model for estimating the clogging time which was made by Rowe and Fleming, the assumptions and derivations are developed reasonably due to the timespace distribution of clogging in drainage layers; and a simplified model is obtained which can reflect the development of clogging and the variation of hydraulic conductivity of the drainage layers. Using the cell analysis of water balance, a method for calculating maximum liquid depth in drainage layers which is based on the maximum liquid depth clogging model is proposed. Comparing with the steady and transient results, it is shown that no clogging results are in accordance with the transient results, which all tend to the steady results. And the clogging must be considered when clogging is serious which may affect the liquid depth markedly. Parameter analysis shows that the greater previously （the smaller later） the hydraulic conductivity, the longer the drainage distance, the faster the infiltration rate, the higher the concentration, the more serious the impact of clogging on liquid depth. At the same time design suggestions are proposed for improving the drainage system.