ESTIMATION OF LOAD-BEARING CAPACITY OF MINE SHAFT TUBING IN SALT ROCKS

The article describes the calculated temporal development of the stress–strain behavior for the tubing support–concrete lining–rock mass using a finished 3D numerical model. The model passed verification with the help of laser scanning data on tubing support in two shafts. The factors of safety are obtained in terms of compressive stresses and strains. The authors make recommendations on using tubing of certain sizes in shafts 7 and 8 m in diameter at different depths.