季节性冻土区渠道防冻胀设计及效果模拟

Frost heaving design and effect simulation of canal in seasonal frozen soil area

针对季节性冻土区浅埋地下水条件下渠道反复冻胀破坏的问题,提出了套砌方法改造渠底及坡脚的加固方案,并运用数值模拟软件COMSOL对改造加固前后渠道抗冻胀和融沉效果进行模拟,对比分析了渠道改造加固前后位移场和应力场变化情况。

In view of the serious problem of repeated frost heave in the channel under the condition of shallow buried groundwater in seasonal frozen soil area, the reinforcement scheme for rebuilding the bottom of the canal and the foot of the slope is proposed, and the numerical simulation software COMSOL is used to simulate the effect of frost heave and thawing before and after the reconstruction and reinforcement, and the strengthening and strengthening of the channel before and after the reconstruction and reinforcement are compared and analyzed. The change of displacement field and stress field.