Underground mine natural ventilation equipment

Abstract

The invention relates to the technical field of underground mine ventilation equipment, especially an underground mine natural ventilation equipment which comprises a large vertical chimney arranged near the pit opening, a main ventilating duct arranged in the main tunnel of the underground mine, and a bottom surface having an outlet higher than the large vertical chimney, wherein the top of the large vertical chimney is provided with an umbrella shape cover, and the diameter of the large vertical chimney is two to four times of that of the main ventilating duct. When the main tunnel of the underground mine is connected with the branch tunnel, the main ventilating duct is provided a with corresponding branch ventilating duct, the connection place is provided with a hermetically sealed butterfly valve, and the distance from the inlet of the ventilating duct to the tunnel face is one to four meters. The bottom of the large vertical chimney is connected with a draft fan, and another side is provided with an ash removal opening which can be closed. The ventilating duct is an abrasion resistant and corrosion resisting elastic hermetically sealed duct and is arranged on the top of the tunnel. The inlet of the ventilating duct is an expansion opening. The invention thoroughly solves the air quality problem adjacent to the tunnel face in the tunnel, and thereby avoids the harm to the workers' health and various safety hidden troubles caused by the bad ventilation.

Description

technical field [0001] The invention relates to the technical field of ventilation equipment for underground mines, in particular to natural ventilation equipment for underground mines. Background technique [0002] Existing underground mine underground ventilation equipment all adopts mechanical forced ventilation equipment. The disadvantages of this type of mechanical forced ventilation are numerous: [0003] 1. It cannot fundamentally solve the harmful gas and dust hazards in the roadway. The reason is that there are many ventilation devices, many contacts, and many leakages. Due to the large amount of equipment, a large amount of heat, magnetic field and vibration will be generated when the equipment is in operation, which will increase the density in the tunnel and form a thermal barrier, so that the air outside the tunnel cannot enter the tunnel smoothly, forming a small circulation in the tunnel, and harmful air in the tunnel. Gas and dust cannot be discharged out ...

AI Technical Summary

Problems solved by technology

Due to the large amount of equipment, a large amount of heat, magnetic field and vibration will be generated when the equipment is in operation, which will increase the density in the tunnel and form a thermal barrier, so that the air outside the tunnel cannot enter the tunnel smoothly, forming a small circulation in the tunnel, and harmful air in the tunnel. Gas and dust cannot be discharged out of the cave, which not only endangers the health of workers, but also poses safety hazards;

[0004] 2. Due to the large amount of equipment, large infrastructure investment, high energy consumption, high noise, and high equipment maintenance costs increase the production cost of the mine;

[0005] 3. Due to the large number of electrical contacts of the ventilation equipment, the probability of causing an electric fire is also very high, and there are a lot of potential safety hazards;

[0006] 4. Since most of the ventilation equipment is a relay-type ventilation system, as long as one piece of equipment fails, the entire ventilation system will be paralyzed, and the entire roadway will have to stop production;

[0007] 5. Since the harmful gas and dust in the roadway cannot be discharged, it will endanger the health of the workers, reduce the physical strength of the miners, and reduce the production efficiency of the mine

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