修建在粘土地基上的水闸,其闸室底板的上下游两端一般均设置相等深度的齿墙,主要用于提高闸室的抗滑稳定性。然而,现行的水闸设计规范和文献均未对齿墙的抗滑作用作详尽的定量分析。目前,水闸设计人员在进行闸室抗滑稳定计算时只有两种选择,即要么不考虑齿墙的作用,按平底板方法计算,要么按所谓的深齿墙方法计算。而这两种方法的计算成果又相差很大。由于现在还没有确切的方法来判别深浅齿墙,为保险计,设计人员往往保守地按前者计算,由此会造成一定的浪费,笔者根据土壤剪切破坏的原理,对地基土和闸底板及其齿墙的相互作用力作了分析探讨,导出了有齿墙时闸室抗滑稳定计算的一般公式,同时还从理论上提出了判别深浅齿墙的方法。 Built on the clay foundation of the sluice, the sluice floor of the upper and lower ends of the general are set equal depth of the tooth wall, mainly used to improve the anti-sliding gate chamber stability. However, none of the current sluice design specifications and references provide a detailed quantitative analysis of the anti-skid effect of the tooth wall. At present, there are only two choices for sluice designers in the stability calculation of sluice sliding chamber, that is, they do not consider the action of rake wall, calculate according to the flat floor method or the so-called deep wall method. However, the calculation results of these two methods vary greatly. Because there is no exact way to judge the depth of the tooth wall, for the insurance plan, designers often conservatively calculated according to the former, which will cause some waste. According to the principle of soil shear failure, the foundation soil and sluice floor and The interaction between the tooth wall and the tooth wall is analyzed and discussed. The general formula for calculating the anti-sliding stability of the chamber is deduced. At the same time, the method of discriminating the deep tooth wall is put forward theoretically.