在我国北方地区的渠道衬砌工程中，存在着因基土冻胀而造成的衬砌破坏问题。
In the canal lining projects in the northern part of China exist some problems concerning lining damage which is caused by frost heave.
在刚性面层下设置一道性能良好的保温层来防止基土冻结，可以从根本上解决冻胀破坏的问题。
The frost heaving damage can be thoroughly solved by laying a heat preservation layer in good condition under the rigid lining to prevent the frost heaving of the base soil.
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