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根据室内土工试验数据,对比深埋可塑粘性土原状样与失水样的物理力学特性,观察到原状样与失水样存在诸多差异。分析土样失水后孔隙比变小、体积缩小的机理,定义了界限失水率。数据表明,在界限失水率前压缩指数变化率随失水率具有明显的线性相关关系;界限失水率后压缩特性趋于稳定。
According to the indoor geotechnical test data, comparing the physical and mechanical properties of the original and water-losing samples of the buried plastic clay, we find that there are many differences between the original sample and the water-losing sample. After analyzing the mechanism of void ratio and volume shrinkage after soil water loss, the limit water loss rate was defined. The data show that before the rate of water loss, the change rate of compressibility index has a clear linear relationship with the rate of water loss. After the rate of water loss, the compressibility tends to be stable.