For effective ventilation Kuznetsovsky railway tunnel the longitudinal scheme of ventilation based on use of jet fans is offered. It is shown that use of the offered scheme of ventilation at influence of natural draft and piston effect of trains is impossible without an automatic control system of ventilation (ACSV). The principles of work ACSV taking into consideration natural and operational factors are proved.
In paper the technique of definition of aerodynamic resistance of the train, a being main component of a piston pressure is resulted. The urgency of the given theme is caused by essential influence of a piston pressure on distribution of fresh air on a tunnel and accordingly on safe operation of railway tunnels.
The paper presents results of feasibility study into recovering non-commercial reserves of mined horizons at the Starobinskoe potassium deposit. Topicality of this task is explained by a rather intensive reserve depreciation at the RUP PO Belaruskaliy Company and the fact that developing new horizons is a capital-intensive task which requires additional geological prospecting activities.
The paper studies formation processes of geological dislocation of the syncline type at the Staroobinsk potassium salt deposit. A fundamental difference in formation of outburst and outburst-safe synclines has been established with application of advanced 3D modeling software.
