Quantitative Analysis of Roof Fall Fault Tree Based on Trapezoid Fuzzy Theory
Xiaolin Chen · Industrial Safety and Environmental Protection · 2013
It is introduced the trapezoid fuzzy theory.The system is applied to draw the roof fall fault tree of Qianyingzi Mine fully mechanized coal face 3212,quantitatively compute the happening probability of roof fall and to determine probability importance degree order of bottom events.The result shows that the roof fall probability scope of fully mechanized coal face 3212 is from 0.001 to 0.005 and lessening the happening probability of event X1 can rapidly reduce the happening probability of roof fall,followed by X19,X18,X17 and the last X2.Fault tree quantitative analysis results can direct coal mine safety management and determine safety investment orientation.