A calculation of thermal and moisture conditions of the soil along the route of a power line

摘要

A mathematical model and an algorithm for solving numerically a two-dimensional problem of heat and moisture transfer are presented, in which the actual freezing and melting processes in porous solution are taken into account. The results of the calculation show that the moisture melting and migration process is intensified by ruptures in the soil cover layer and by ingress of overfrost groundwater. For these reasons, the foundations of overhead line supports must be designed taking the changes in the thermal and moisture conditions of the soil in the cut-through area into account and with due regard to the hydrogeological conditions of the area.