一、前言 饱和松砂的液化一般归因于地震等循环荷载。但是,饱和松砂在不排水条件下受到静荷载时,也可能由于超孔隙水压力骤增使其强度大为降低或丧失,从而导致灾难性事故。后者称为静力液化。室内研究表明,疏松粉煤灰的静力液化特性也很显著。基于这种认识,在某电厂灰坝的试验研究中,着重研究了粉煤灰在固结不排水条件下的静力液化现象及其对强度的影响。本文是这一研究的补充。 I. INTRODUCTION The liquefaction of saturated sand is generally attributed to cyclical loads such as earthquakes. However, when the saturated loose sand receives a static load under undrained conditions, it may also be greatly reduced or lost due to the sudden increase in excess pore water pressure, resulting in a catastrophic accident. The latter is called static liquefaction. Indoor studies have shown that the static liquefaction properties of loose fly ash are also significant. Based on this understanding, in the experimental study of an ash dam in a power plant, the static liquefaction phenomenon of fly ash under consolidated undrained conditions and its effect on strength were emphatically studied. This article is a supplement to this study.