石拉渊引河灌区渠道不同衬砌形式下冻胀特征研究

Research on Frost Heave Characteristics under Different Lining Forms of Canal in Shilayuan River Diversion Irrigation Area

为研究石拉渊灌区渠道衬砌结构与冻胀特征关系,基于热力耦合仿真计算方法,探讨衬砌形式以及衬砌结构设计对渠道冻胀特征影响。结果表明,不同衬砌形式下冻胀位移变化具有相似性,渠坡底部衬砌方案中冻胀位移峰值分布以及变化特征最为有利于抗冻胀设计。综合认为衬砌方案应为渠坡底部透水,透固体宽度1 m~3 m。研究结果可为研究渠道衬砌设计比较以及参数优化提供参考。

In order to study the relationship between canal lining structure and frost heave characteristics in Shilayuan irrigation district,the influence of lining form and lining structure design on frost heave characteristics of canal was discussed based on thermodynamic coupling simulation method.The results show that the variation of frost heave displacement in different lining forms is similar,and the distribution and variation characteristics of frost heave displacement peak value in the lining scheme at the bottom of the canal slope are most beneficial to the anti-frost heave design.It is concluded that the lining scheme should be water permeable at the bottom of the canal slope with a solid permeable width of 1 m~3 m.The results can provide reference for the comparison of canal lining design and parameter optimization.