Ways of Improving Safety and Reliability of Ventilation in Mines

摘要

It is shown that to prevent accidents in coal mines due to gas contamination, it is expedient to develop computerized testing and ventilation control systems based on the use of new reversible axial fans. Operating speed of adjustment and reversal of these fans is estimated. Application of high-productive machines leads to increased loading on faces, which entails more non-uniform methane emission during a day. This non-uniformity considerably grows within a period of developing an extraction pillar or a mine field [1-3].