Rudko V. Providing of accident-free exploitation of gas pipelines in a landslide dangerous mountain areas

Methods and means for operational control of rock massifs deflection mode along the routes of pipelines are considered. These methods and means allow to follow the dynamics of stress field and to make a forecast of the development of geological processes and also to scheme the object’s loading. The methods of determination of permissible level of free-oriented loading on the pipe in the area of landslides developed. The results of experimental researches of mechanical characteristics determination of plastically-deformed pipe steels during overloading are given. Scientifically substantiate base of advisability of estimation of resistance of pipe steel crack spreading according to ?к – criterion is given. Durational exploitation of main pipelines determines the decrease of resistance to the spreading of a crack.