What is the purpose of maintaining a ventilating current in pillar lines?

The primary purpose of maintaining a ventilating current in pillar lines is to prevent gas accumulation. In underground mining operations, particularly in coal mines, gases such as methane can build up in areas where ventilation is insufficient. By ensuring a continuous flow of air through the pillar lines, the risk of dangerous gas concentrations is significantly reduced, thereby enhancing safety for miners. Proper ventilation helps dilute and remove harmful gases, which is critical for preventing potentially explosive conditions as well as ensuring a healthier working environment.

While temperature control, oxygen levels, and visibility are important aspects of mine safety and operation, the immediate focus of ventilating currents is on mitigating gas hazards. Therefore, maintaining proper airflow directly addresses the concern of gas accumulation, prioritizing miner safety through effective ventilation strategies.