膨胀土在高压力下强度特性研究

Research on Strength Characteristics of Swelled Soil at High Pressure

在南水北调某干渠地段选择了同一地层、同一钻孔获取的同一组膨胀土样，采用 直剪仪、普通三轴仪、高压三轴仪，在饱和条件下对原状膨胀土进行了力学强度特性研究， 得出了反映膨胀土强度特性的力学参数及特性。

Though t he swelled soil is generally hard or hard－ plastic, it can be softened and its strength be degraded by water. Consequently, the swelled soil often harms to the construction of factory, mine, transportation or water conservancy project. The seepage failure or landslide often happened in earth dam or under the dam－ bas ement. As to the swelled soil in some water conservancy project, the author gave an emphasis on the strength characteristics of the undisturbed swelled soil und er the condition of saturation.