中文摘要：

盐岩蠕变特性会因矿物组成成分、加载应力水平的不同而异。通过对钙芒硝盐岩及氯化钠盐岩在不同载荷作用下多于100d的蠕变试验研究发现；（1）在相同载荷7．0MPa作用下，不同矿物成分盐岩的蠕变特性不同，钙芒硝盐岩的蠕变速率仅为氯化钠盐岩的3．67％，分别为8．72×10^-6和2．38×10^-4d^-1，二者有2个数量级之差；（2）在不同载荷作用下，盐岩的蠕变特性不同。在7．0MPa载荷作用下，盐岩试件的蠕变速率为2．38×10^-4／d；而在4．0MPa载荷作用下，试件的蠕变速率为3．77×10^-5d^-1，仅为前者的15．87％，表现出盐岩蠕变明显的应力效应特征；（3）在7．0和12．0MPa两种不同载荷作用下，钙芒硝盐岩的蠕变率分别为8．72×10^-6d^-1和1．12×10^-5d^-1，后者为前者的1．28倍，与变形量比例相一致。最后，通过分析建立盐岩瞬态蠕变和稳态蠕变的耦合本构方程，该方程拟合曲线与试验结果曲线吻合较好。所获试验结果及本构方程可对层状盐岩矿床内建造油气储库的稳定性分析提供一定的参考依据。

英文摘要：

The creep property of rock salt varies with the mineral gradients and loading level. Through creep experiments on rock salt and glauberite rock salt with different stresses and sample sizes for more than 100 days, the following results, which are elaborately described in the paper, are obtained： （1） under the same stress 7.0 MPa, the creep ratios of glauberite rock salt and rock salt are 8.72×10^-6 and 2.38×10^-4 d^-1 respectively, and the former is only 3.67% of the latter; （2） under different stresses, the creep properties of two kinds of rock salt are different from each other. The rock salt loaded by 7.0 MPa shows a higher creep ratio, which is 2.38×10^-4 d^-1, while the creep ratio of the sample loaded by 4.0 MPa is 3.77×10^-5 d^-1, which is only 15.87% of the former; （3） under different stresses, i. e. 7.0 and 12.0 MPa, the creep ratio of glauberite rock salt is 8.72×10^-6 and 1.12×10^-5 d^-1 respectively. The higher the load is, the greater the creep ratio is. Finally, a creep constitutive equation of rock salt is established based on the theoretical analysis; and it fits with the obtained creep data very well. The results obtained and constitutive equation can provide some references for stability analysis of oil and gas storage constructed in bedded salt deposits.