Abstract
The problem of ensuring operational stability of cold gas pipelines in permafrost stands out among the diverse problems encountered in the construction of gas-pipeline systems. Based on the Yamburg-Novyi Urengoi gas pipeline as an example, it is demonstrated that heaving of enclosing soils is the basic cause of the deformation and floating of pipelines. The influence exerted by the gas-temperature regime on heaving processes in frozen and frozen-through soils and gas-line deformation is examined.
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