中文摘要：

针对寒区膨胀土边坡冻胀问题，提出采用土工织物加筋处理技术。通过加筋处理及未处理两组室内冻土力学模型试验对比分析，研究在冻融循环作用下土工织物加筋膨胀土边坡的运行机制和效果。试验结果表明：①在土体冻结过程中，未处理的膨胀土边坡不均匀冻胀明显，土工织物加筋能有效抑制结构不均匀冻胀；②土工织物对水分的迁移有阻隔作用，加筋土处理模型的冻深略大于未处理模型；③碎石聚氨酯固脚具有一定的保温防冻胀作用。

英文摘要：

For freeze injury of expansive soil slope , a technology using geotextile reinforced was handled .In accordance with the comparation and analysis of the treated and untreated frozen mechanical model test , the operation mechanism and effects of geotextile-reinforced expansive soil slope under freezing thaw cycle conditions are analyzed.Conclusion： ① In the process of soil freezing , untreated expansive soil slope uneven heaving obvious, geotextile-reinforced structure can effectively suppress uneven frost heave; ②Geotextile can block water migration in the soil , frozen deep of geotextile-reinforced model is slightly larger than the untreated models; ③Elastocoast can increase heat resistance;the Elastocoast protection-foundation has heat preservation effect .