The Stress State in the Rock Mass Exposure to Moisture and Temperature Fields

If you change the moisture and temperature of soil in straitened state forced deformations arise. This phenome-non is ambiguous. At temperatures above 0 °C the moisture is in the liquid state, increasing moisture causes swelling. If changes in temperature below 0 °C phase transitions of moisture occur, causing forced volume deformation due to the difference in densities of ice and water. Along with this, the mechanical characteristics of the clay have a function of temperature and humidity thus causing inhomogeneity soil mass.In order to assess the impact of changes in the quantities of solid and liquid phases contained in the soil moisture, as well as the phenomenon of phase transition to the state of stress in the work requested to consider the problem of the break of the pipeline in the frozen soil, followed moistening and heating the soil by liquid.Similar problems were considered in the stationary [2–4], and in non-stationary formulation [5,6] but in the case of the unfrozen soil at a constant temperature. In this paper we consider the ultimate moisture and temperature condition, corresponding to the stationary (steady) process. The problem is unrelated, i.e. stress state of the soil mass has no effect on the moisture and temperature fields. As an example, we consider the stress state of clay array at break pipeline. The problem is solved in the flat setting; the area of the array is limited by the cylindrical surface of radius b much greater than the radius of a cylindrical source a.