Calculation and design of hermetic shields and passing combines

General information about hermetic tunnel shield machines, technological operations, the features of ensuring the safety of working personnel and environmental protection are given. Their classifications and areas of application, layout and design are presented. Recommendations are given on the choice of parameters and the type of such machines for various mining and geological conditions. The patterns of destruction of rocks with rotary cutters, their wear resistance and specific consumption during operation, production technology, as well as the loading of the working bodies of passage combines of the electoral action are considered. The trends and prospects for their development are noted. Methods and methods for calculating and designing both hermetic tunnel shield machines and the executive organs of combines are presented. For students and graduate students studying mining