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Importance of auxiliary ventilation

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Chulalongkorn University
Chulalongkorn University

This document discusses auxiliary ventilation in mines. Auxiliary ventilation is needed to supply air to working places in mines when the main ventilation stream is inadequate or unavailable. This is often necessary for development work where places advance beyond moving air, and in room-and-pillar and some stopping mining methods. There are many applications of auxiliary ventilation that can be grouped into three categories: supplying air to dead-end working places, supplying uncontaminated air to working faces, and supplying conditioned air to faces where temperature and humidity need to be controlled.

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By Kalim Ullah
Problems arise in the ventilation of working places in mines where the main-ventilation air stream is inadequate or unavailable. Reliance then must be placed on supplemental means of supplying air. The practice is termed as auxiliary ventilation.
The necessity for auxiliary ventilation exists because; working places in most mining systems are continually being advanced beyond the main ventilation air stream. Blind or dead-end workings are characteristic of development work in mining, But even production (exploitation) workings sometimes advance beyond moving air, Particularly in room-and-pillar and some stopping methods.
There are many number of common applications but they all may be grouped into three categories: 1. Supplying air to dead-end working places (quantity control) 2. Supplying uncontaminated air to faces of working places (quality control) 3. Supplying conditioned air to faces of working places in unconformity (temp-humidity control)
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Importance of auxiliary ventilation

  • 2. Problems arise in the ventilation of working places in mines where the main-ventilation air stream is inadequate or unavailable. Reliance then must be placed on supplemental means of supplying air. The practice is termed as auxiliary ventilation.
  • 3. The necessity for auxiliary ventilation exists because; working places in most mining systems are continually being advanced beyond the main ventilation air stream. Blind or dead-end workings are characteristic of development work in mining, But even production (exploitation) workings sometimes advance beyond moving air, Particularly in room-and-pillar and some stopping methods.
  • 4. There are many number of common applications but they all may be grouped into three categories: 1. Supplying air to dead-end working places (quantity control) 2. Supplying uncontaminated air to faces of working places (quality control) 3. Supplying conditioned air to faces of working places in unconformity (temp-humidity control)