多级机站矿井通风系统的FTA

Fault Tree Analysis for a Mine Ventilation System with Multi-fans

运用安全系统工程中的ＦＴＡ法，建造了多级机站矿井通风系统的事故树．通过定性分析评价系统的可靠性，结果表明：多级机站矿井通风系统风机多，事故树与门少或门多，因而最小割集多，通风系统可靠性比较低．

Based on the fault tree analysis (FTA) in safety system engineering, a complete logic tree describing the fault causes and results in a mine ventilation system with multi-fans is built up. After assessing its reliability, the results show that the more the fan number in the mine ventilation system is, the worse the reliability is. One of the most important reasons is that there are more OR gates and less AND gates in the fault tree in the system with multi-fans.