Development of energy-saving technologies providing comfortable microclimate conditions for mining
- 1 — Ph.D., Dr.Sci. Senior researcher Mining institute, Ural bunch of the Russian Academy of Sciences
- 2 — Ph.D., Dr.Sci. Head of department Mining institute, Ural bunch of the Russian Academy of Sciences
- 3 — Ph.D., Dr.Sci. Leading researcher Mining institute, Ural bunch of the Russian Academy of Sciences
- 4 — Ph.D. Head of sector Mining institute, Ural bunch of the Russian Academy of Sciences
Abstract
The paper contains analysis of natural and technogenic factors influencing properties of mine atmosphere, defining level of mining safety and probability of emergencies. Main trends in development of energy-saving technologies providing comfortable microclimate conditions are highlighted. A complex of methods and mathematical models has been developed to carry out aerologic and thermophysical calculations. Main ways of improvement for existing calculation methods of stationary and non-stationary air distribution have been defined: use of ejection draught sources to organize recirculation ventilation; accounting of depression losses at working intersections; inertance impact of air streams and mined-out spaces for modeling transitory emergency scenarios. Based on the calculation algorithm of airflow rate distribution in the mine network, processing method has been developed for the results of air-depressive surveys under conditions of data shortage. Processes of dust transfer have been modeled in view of its coagulation and settlement, as well as interaction with water drops in case of wet dust prevention. A method to calculate intensity of water evaporation and condensation has been suggested, which allows to forecast time, duration and quantity of precipitation and its migration inside the mine during winter season.