The migration and accumulation of chlorine salt in frozen soils will cause corrosion to the buried pipeline and seriously affect its service life. In order to investigate the effect of moisture and salt migration and accumulation on pipeline corrosion, three models of barrier measures were established using similar criteria, namely, non-saline soil replacement model (M1), non-saline soil replacement with impermeable geotextile barrier model (M2), and gravel replacement model (M3). Laboratory model tests were carried out to study the characteristics of moisture and salt migration and the barrier effect of different measures in response to freeze-thaw (F-T) cycles. The freezing depth is 38.6, 29.7, and 43.5 cm in three models. The volumetric moisture contents and salt concentrations are positively and negatively correlated with temperature, respectively. In M1, the maximum moisture contents decrease and increase obviously inside and outside of the upper boundary, with the variation rate of 11.7% and 11.1%. The maximum salt concentrations decrease by 7.7% and increase by 1.31 times, respectively. The concentration variations of the lower boundary are not obvious. They remain essentially constant in M2, i.e., 0.323 and 0.039 mol kg⁻¹. The salt concentration in M3 has a far less reduction rate of 4.0%. Impermeable geotextile barrier and gravel replacement can prevent moisture and salt migration and corrosion to the pipeline. Concentration variation of M1 is primarily influenced by convection, salt expulsion and diffusion, while that of M2 outside the upper boundary is only influenced by convection, and M3 is caused by convection and salt expulsion. A combination of M3 and M2 measures are required when the buried pipeline is located above the freezing front and the water table is shallow. In other cases, M2 measures are chosen. The results can provide theoretical support and technical guidance for more economical and efficient construction and safe operation of the buried pipeline.

氯盐在冻土中的迁移和积累会对埋地管道造成腐蚀，严重影响其使用寿命。为了研究水盐迁移积累对管道腐蚀的影响，采用相似的标准建立了三种屏障措施模型，即非盐渍土替代模型（M1），非盐渍土不透水土工布屏障模型(M2) 和砾石置换模型 (M3)。进行了实验室模型试验，研究了水盐迁移特征以及不同措施响应冻融（FT）循环的阻隔效应。三种型号的冷冻深度分别为 38.6、29.7 和 43.5 厘米。体积水分含量和盐浓度与温度正相关和负相关，分别。在M1，最大含水率在上边界内外明显下降和上升，变化率分别为11.7%和11.1%。最大盐浓度分别降低了 7.7% 和增加了 1.31 倍。下界浓度变化不明显。它们在 M2 中基本保持不变，即 0.323 和 0.039 mol kg^-1。M3 中盐浓度的降低率远低于 4.0%。不透水土工布屏障和砾石替代可以防止水分和盐分迁移和腐蚀管道。M1的浓度变化主要受对流、排盐和扩散的影响，而上边界外的M2浓度变化仅受对流影响，M3是由对流和排盐引起的。当埋地管道位于冰冻前沿以上且地下水位较浅时，需要M3和M2相结合的措施。在其他情况下，选择 M2 度量。研究结果可为埋地管道更加经济高效的施工和安全运行提供理论支持和技术指导。