Experimental and Theoretical Justification of Designing a Cable Line Exposed to Cryogenic Cracking

Abstract

The natural conditions of the South of Transbaikal cryolithic zone are considered, which determine the specifics of thermomechanical processes in seasonally frozen dispersive soils. A justification is provided for calculation of underground cable exposed to cryogenic soil cracking based on thermoelastic model of soil deformation. The calculation scheme of the model is provided along with the limit-state based formulas for calculating the effect of cryogenic cracking on underground cable. The effective devices and methods are described for ensuring protection of the underground linear constructions from damage caused by cryogenic cracks.