Justification of the parameters of rotary-vibration drilling of small-diameter boreholes in rocks based on a submersible cavitation hydrovibrator von S. P. Minieiev, L. M. Vasyliev, N. Y. Trohymets, V. Y. Maltseva, M. V. Polushyna

Volltext

The method for driving preparatory roadway in gas-saturated rocks prone to gas-dynamic phenomena von S. P. Minieiev, L. M. Vasilyev, M. Y. Trohymets, V. Y. Maltseva, Ye. O. Vialushkin, M. V. Polushyna

Volltext

Method and equipment for the safe development of preparatory workings in the gas-bearing coal seams von M. Y. Trokhymets, V. Y. Maltseva, Y. O. Vialushkin, V. Y. Antonchik, T. V. Moskalova, M. V. Polushyna

Volltext