介绍了墨西哥一座土石坝反滤层特性与设计规范不符的情况,叙述了大坝的现场试验和完成的修复工作,据此尝试性地依据目前反滤层设计标准进行了相关分析,提出了土石坝如何避免管涌或内部侵蚀的若干建议。所提出的采用水泥和膨润土加水混合的材料来修复防渗心墙的做法,对其他同类土石坝的修复和正常运行具有一定借鉴意义。 This paper introduces the situation that the characteristics of a filter rock of an embankment dam in Mexico are inconsistent with the design specifications. The field tests and the completed repairing work of the dam are described. Based on this, a tentative analysis is made based on the current design criteria of the filter layers, Some advice on how to avoid piping or internal erosion. The proposed method of using cement and bentonite mixed with water to repair the impervious core wall has some reference to the restoration and normal operation of other similar earth-rock dams.