关键词: 采空区, 稳定性评价, 层次分析法, 灰色关联分析

Abstract: A new synthetic assessment method based on the analytical hierarchy process(AHP）and grey correlation method was put forward to evaluate the stability of the underground mined-out areas. Couples of dynamic and static，quantitative and qualitative factors working on the goaf stability were taken into account，such as the rock mass structure and the geological structure factors；The AHP method was used to establish the synthetic assessment indexes system of the stability of mined-out areas and ascertain the weight matrix of the influence factors；The stability evaluation model of the mined-out areas was constructed by the grey correlation method to predict the situation of the Mined-out areas according to gray related degree. The comprehensive evaluation system was built up in Laoyachao mine，which consisted of 3 levels and 13 indexes and the correlation degree of underground mined-out areas wasr₂>r₇>r₁>r₅>r₃>r₉>r₆>r₄>r₈,by using the Second-level grey correlation analysis，The results showed that the stability of 2,7,1 mines-out areas were the best，the 5,3,9,6 took second place，and the 4,8 were the worst.

Key words: Mined-out areas, Stability assessment, Analytical hierarchy process (AHP), Grey correlation analysis