Prediction of Stope Stability Using Variable Weight and Unascertained Measurement Technique

A new model is established to analyze mining stope stability, using variable weight theory calculate the index for each factor in different stopes and unascertained measure evaluation technique predict risk grade of stability. In this model, an system by virtue 7 most important factors established, including rock saturated uniaxial compressive strength, quality designation, joint fissure, span, condition pillar, groundwater seepage volume, rate supporting pit roof. And divided into 5 grades assignment value classification method standardization. Accordingly, analysis result also classified grades. This used 6 main from -270 m section Xin-Qiao Mine, China. The results, giving guiding use corresponding measures, avoided problem state out balance caused conventional invariable models have ensured no accident occurred production recent years. can be other mines widely, assigning values on basis current situ cases.