无粘性散粒体的结构和依斯托敏娜的滤层设计准则分析

由于采用太沙基砂砾料滤层设计准则或依斯托敏娜的无粘性散粒体滤层设计准则，时有个别工程的反滤层发生淤堵失效或不起保土作用的现象，鉴于此，对无粘性散粒体的结构和依斯托敏娜的无粘性散粒体滤层设计准则与散粒体的结构关系进行了分析，指出了这个设计准则的适用范围及应注意的问题。可作为无粘性散粒体滤层设计准则的基本模式。

Structure of Cohesionless Granular Mass and Analysis of Istomina Design Criteria of Filtering Layer

When using Terzaghi design criteria for filtering layer of sandy gravel or Istomina design criteria for filtering layer of cohesionless granular mass, sometimes the filtering layer for some project had been plugged and lost its ability of soil holding. In view of the above-mentioned facts, the structure of cohesionless granular mass and Istomina design criteria for filtering layer of cohesionless granular mass and their relationship are analyzed. The available scope of this design criteria and some problems needed paying attention to, which may be used as the basic mode for the design criteria of filtering layer of cohesionless granular mass, are indicated.