High temperature mine ventilation method

Abstract

The invention discloses a high temperature mine ventilation method. The method comprises a manner of focused intake air and dispersed return air, and a manner of multi-air shaft draw-out type ventilation. An initial stage mining area and an extending mining area both adopt an intake air manner of an auxiliary well for main air intake, a main well for auxiliary air intake, and a main intake air main roadway for focused air intake; the initial stage mining area adopts a central industrial square air shaft for return air; the extending mining area adopts a well boundary air shaft for return air; main fans are mounted in a central square return air pithead and a well boundary return air pithead; a full mine adopts an exhaust ventilation manner. Through the full mine ventilation of a high temperature mine, the method can effectively alleviate the high temperature heat damage underground.

Description

technical field [0001] The invention relates to a high-temperature coal mine whole mine ventilation technology, in particular to a high-temperature mine ventilation method. Background technique [0002] The mine ventilation system is an important part of the mine production system, and whether its design is reasonable or not has a long-term and important impact on the safe production and economic benefits of the entire mine. Especially in high-temperature mines with heat damage problems, a scientific and reasonable ventilation system (ventilation method) is the guarantee for safe and efficient mine production. [0003] In the prior art, the ventilation systems can be divided into central type, diagonal type, regional type and mixed type according to the different positions of the inlet and return air shafts in the mine field. The central ventilation system has the advantages of less shaft engineering and low initial investment. Therefore, it should be preferred in the init...

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Problems solved by technology

[0005] For high-temperature mines, with the expansion of minefield development area, the length of ventilation routes continues to increase, and the ventilation network becomes more and more complex. Traditional ventilation methods will have problems such as insufficient ventilation capacity, which is not conducive to mine cooling.

In addition, if the mine adopts the press-in ventilation method, the entire mine ventilation system is in a positive pressure state higher than the local atmospheric pressure, which can be approximately regarded as a thermal process of adiabatic compression, which has a significant heating effect on the air flow, and is not conducive to mine ventilation. cool down

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