Abstract
Intensification of mining operations and application of innovation technologies providing efficient mining and processing of mineral materials is constrained by requirements for aerogasdynamic safety systems. The local-ventilation fans distinguished for deficient adaptability and aerodynamic load are one of energy-intensive components of this system. Modified conformal mapping, Chaplygin singular points, and the theory of associated vortices and residues were used as the basis for construction of an additive mathematical model of a rotating circular grating of aerogasdynamic profiles with vortex sources to control circulation and the boundary layer. The aerodynamic scheme and parametric series of adaptive highly loaded fans of VRVP type were developed for airing of dead-end workings of up to 3000 m in length, The combination of the novel fan and gas-sucking fans increases the aerodynamic barrier up to a load of at least 35 000 t/day. The test results of pilot VRVP-6 justified the increase in adaptability by 70% and the aerodynamic load by more than 20%.
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