In-hole ventilation system suitable for mining method long tunnel

Abstract

The invention provides an in-hole ventilation system suitable for a mining method long tunnel. The system is arranged in a tunnel and on a secondary lining trolley and comprises a wind bag, a wind bag box, a winch and a steel cable, wherein the wind bag box is fixed to the top of the secondary lining trolley, the winch is fixed to the top of the wind bag box, one end of the steel cable is contained in the winch, and the other end of the steel cable extends out of the tunnel; the air bag box comprises an outer cylinder, an inner cylinder and an interlayer between the outer cylinder and the inner cylinder, the end, close to a tunnel portal, of the interlayer is open, and a first connector is arranged at the end, close to the tunnel portal, of the inner cylinder; and one end of the wind bag is arranged outside the inner cylinder in a sleeving mode and folded and stored in the interlayer, and the other end of the wind bag extends out of the interlayer, is connected with the first connector and extends out of the tunnel along the steel cable. According to the in-hole ventilation system suitable for the mining method long tunnel, the technical problem that in the prior art, in the mining method tunnel construction process, a ventilation system needs to be closed frequently, and potential safety hazards exist is solved.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to an in-cavity ventilation system suitable for long tunnels in mining methods. Background technique [0002] Due to the drilling, explosive blasting, ballasting, sprayed concrete, internal combustion machinery and transport vehicle exhaust, excavation and other factors in the tunnel constructed by the mining method, the oxygen in the tunnel is greatly reduced, and the mixed preparation is harmful. Gas and rock dust make the air in the cave dirty. As the tunnel continues to be excavated and extends to the depths of the mountain, the temperature and humidity in the tunnel increase accordingly, which has a serious impact on the health of the workers in the tunnel. Therefore, a reasonable and feasible ventilation plan must be formulated according to local conditions to ensure sufficient fresh air in the cave, reduce the concentration of harmful gases and dust, improve working conditi...

AI Technical Summary

Problems solved by technology

However, at the present stage, the ventilation ducts in the mine construction tunnels are inconvenient due to the restrictions of the construction environment. With the deepening of tunnel excavation and the movement of the second lining trolley, the tunnel ventilation system needs to be closed every time the ventilation ducts are extended, and the required The time is long, which brings safety hazards to tunnel ventilation

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