2. Analysis of the Reliability of Ergonomics in a Mine ventilation system
A mine ventilation system is a complex, random, “fuzzy” and unstable man - machine – environment
system affected by many factors. It is also a system of dynamic development with spatial and temporal
changes, which has its own characteristics. There are many factors affecting the reliability of a mine
ventilation system: the ventilation route, method, network, mine-face forward and transfer, whether it is
tunnel-through or closed, deformation (roof-fall, slabbing, kick drum, etc.); the role of natural wind, the
operating fan, wear and corrosion; the condition of ventilation structures; roadway pedestrians, vehicles,
and deposits and other natural factors; and ventilation safety management (administration, personnel,
systems and measures, monitoring equipment, etc.). It is difficult to bring the effectiveness of any
reasonably designed and well-equipped ventilation system into full play without a good ventilation
management team. Therefore, the analysis of the reliability of a mine ventilation system should include
four aspects: the ventilation network, the ventilation power, the ventilation control facilities and the
ventilation management team.
2.1. The Ventilation Network
Tang Minkang and Ding Yuanchun / Procedia Engineering 26 (2011) 1705 – 1711 Tang Minkang/ Procedia Engineering 00 (2011) 000–000 1707
The ventilation network is an interrelated, complex aggregate composed of all the roadways the
airflow goes by, consisting of the mine ventilation (the arrangement of the relative location of the air shaft
into-the-mine and back-from-the-mine), and the mid-ventilation and stoop ventilation networks. Mine
ventilation includes three types: the central type, the diagonal, and the central-diagonal hybrid. The
choice of ventilation system directly affects the length of the line and the resistance of ventilation in the
underground mine. Different ventilation systems have different resilience.
The ventilation tunnel in the ventilation network can be divided into a parallel roadway, a roadway in
series and a diagonal roadway according to their mutual relations in the network.
This research on the reliability of a mine ventilation system is to focus on a diagonal network (harmful
and harmless diagonal). With the continuous advance and succession of the mine face, the preparation,
production, ending and taking-over of the mining area, the extension of the mine, and the consequent
implementation of the construction and removal of ventilation structures, the network structure of a mine
ventilation system changes over time, causing changes in ventilation parameters, such as wind volume
distribution. Whether the direction of flow and air volume in the ventilation network can sustainably meet
the demand of the wind points or not, plays a decisive role in the reliability of a mine ventilation system.
In the study of the reliability of a given wind direction in a mine ventilation network, the main factors
to be taken into consideration are: wind speed, dust concentration, temperature, and the concentration of
toxic and harmful gases. We must analyze whether these indicators are within reasonable limits of the
requirements of the statutes. There are many reasons for the failure of the flow in the wind road, such as
natural wind, wind pressure in fires and changes in the status of the mechanics of the fan; or changes in
wind resistance in the tunnel, caused by falls, rib spalling, floor heave, accumulation of debris inside the
tunnel, vehicle operation, pedestrians, and destruction of ventilation structures or combinations of the
various reasons mentioned above.