【摘要】 试验研究表明 ,土体冻结时的热筛效应和水分迁移引起分凝冰层出现 ,导致土体冻胀。冻结历时的增长不断增大了冻结缘的厚度 ,造成冻胀破坏。所以渠道衬砌体破坏的原因主要是水分入渗和长历时冻结造成的。笔者在研究分析渠道衬砌体冻胀破坏机理的基础上提出“防渗保温 ,疏抗结合 ,调节运行 ,科学管理”的防治对策及具体措施更多还原

【Abstract】 The results of experimental study show that the causes of failure of canal lining blocks are the moisture infiltration and freezing for a long time. On the basis of analysis for the failure mechanism of frost heaving of canal lining, the paper puts forward the preventive control ways and measures such as "Seepage Control and Heat Insulating, Combining Looseness with Resistance, Regulating Operation, Scientific Management.更多还原