Abstract: In view of the low air volume, high dust concentration, exhaust gas accumulation of diesel engine and high temperature of the signal machine ventilation pattern of the 2 600 m tunneling faces of the Longshou mine Ⅰ# mining area, the combined ventilation technology is proposed based on large diameter borehole and wind libraries transition so as to calculate the key technical parameters. Contrastive analysis between the combined ventilation technology and signal machine ventilation pattern are done from the perspective of the technical feasibility and economy. The analysis results show that, the performance of the former is better than the later. Besides that, the research results has the guiding significance for long-distance tunneling ventilation in the future.

Key words: Large diameter borehole, Wind libraries, Long-distance, Tunneling ventilation, Dust removal