盐渍土道路翻浆机理与防治措施

Prevention and Control on Frost Boiling of Saline Soil Road

水、温度、盐分等因素导致盐渍土液相含量的增加,抗剪强度的降低,从而使路基软化,是盐渍土翻浆的重要内因。基于相平衡理论,分析这些因素对盐渍土含液量及抗剪强度的影响规律,最终得到盐渍土的翻浆机理。根据上述有关研究结果,在总结现有的盐渍土道路翻浆防治经验基础上,通过试验路段,探讨了盐渍土道路翻浆防治的有效途径和措施。

The internal causes of frost boiling of saline soil include increase of liquid content therein and decrease of shear strength thereof, which are resulted from water, temperature, saline matters and other factors, and result in subgrade softening. Based on phase equilibrium theory, the law of these factors affecting the liquid content and shear strength of saline soil was analyzed, then the mechanism of frost boiling was concluded. According to the research results, the methods and measures effectively preventing frost boiling of saline soil road were discussed in relation to the test section on the basis of generalization of the present treatment experience.