文章借鉴其它领域对淤堵作用的定义,归纳了水库坝基防渗方面淤堵作用的相关概念和定义,并自行设计研制了渗透淤堵仪,进行了一系列试验,在试验的基础上,分析了淤堵作用的存在和降低土体渗透性的作用过程,从而论证了淤堵作用对坝基防渗或减渗的意义。 Based on the definition of clogging in other fields, the article summarizes the concepts and definitions of clogging in dam foundation seepage prevention, and designs and develops a series of experiments on permeability clogging meter. On the basis of the experiment, The existence of silt-blocking effect and the process of reducing the permeability of soil, so as to demonstrate the significance of silting-blocking effect on seepage prevention or reduction of dam foundation.