Simulation on ventilation and dust diffusion on heading face of the diversion tunnel;

It introduced the drift collocation of wetting dustproof system in driving face and the lectotype design of the correlation equipment.

This article introduces the situation of using the longhole shock blasting technology to prevent gas and coal outburst in driving face,analyzes the application result.

3422 driving face in Shitai Coal Mine.

For gripping the distribution regularities of the dust, based on the theory of two-phase flow of gas and solid,and the characteristics of coal mine driving working face,using the discrete phase models of computational fluid mechanics to simulate the dust concentration during the ventilation process of coal roadway driving with forced ventilation.

Basing on the theory of two-phase flow of gas and solid, and the characteristics of coal mine driving working face, using the discrete phase models of computational fluid mechanics to simulate the dust concentration during the ventilation process of coal drift driving with exhaust ventilation.

Analysis on crossing faults of heading face in outburst seam;

Protection against outburst mechanism of hydraulic extrusion measure in the front of coal road heading face;

Gas drainage technology for high gassy gateway heading face;

In light of this experience,this paper introduces the ventilation technique in the long and big tunnel single-head advancing.

The difficult problems of always restricting quality and effectiveness of draft in dead face have been solved.