The warm oil will produce thawing of ice rich soil adjacent to the pipeline when it crosses through permafrost zone, resulting in thaw settlement of the pipeline and variation of soil properties.
Laboratory research on properties of frost heave and thaw settlement of cement-improved Shanghai's grey-yellow silty sand
The most permafrost from Shiquan river to Ritu is seasonal frozen soil. It is easy threatened by permafrost such as frost swelling, salivary ices, thaw settlement.
