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新疆地区是我国典型的咸寒区,渠基土在冬季的冻结引起了输水渠道衬砌的破坏.为了解冻结状态下渠基土的物理力学特性,在常应变率条件下对新疆北疆季节性冻土区的含硫酸钠渠基土进行了多种条件下的单轴抗压强度试验.结果表明:单轴抗压强度随温度的降低线性增加;单轴抗压强度随干密度的增加而增大,二者之间具有较好的幂函数关系.与氯化钠盐渍土不同,硫酸盐渍土的单轴抗压强度随着硫酸钠含量的升高而增大,并且呈现近似线性增加的特性.
Xinjiang is a typical salty-cold area in China, and the freezing of canal foundation soil in winter has caused the destruction of the lining of the water conveyance channel.In order to understand the physical and mechanical properties of the foundation soil under freezing conditions, The results show that the uniaxial compressive strength increases linearly with the decrease of temperature, and the uniaxial compressive strength increases with the increase of dry density And increases with a good power function relationship between the two.Unlike sodium chloride saline soil, the uniaxial compressive strength of sulfate saline soil increases with the increase of sodium sulfate content, and presents a similar Linearly increasing characteristics.