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为了准确地对地下采场中矿柱稳定性进行预测,丰富矿柱稳定性预测的方法,在系统地分析矿柱稳定性影响因素基础上,选取矿柱宽高比w/h和矿柱载荷与矿柱承受荷载之比S/P为主要影响因素,引入贡献率的概念确定权重,考虑不同赋存条件下矿柱w/h与S/P对其稳定性影响贡献不同,分别建立未确知测度模型,结合国内外29个工程实例进行验证.实验结果表明:引入贡献率确定权重,建立的未确知测度模型对矿柱进行稳定性预测的准确率达到96.55%,该种方法科学、严谨、简单、合理,能为工程实践中进行矿柱稳定性预测提供一定的指导.
In order to accurately predict the stability of ore pillars in underground stopes and to enrich the prediction of ore pillar stability, based on the systematic analysis of the factors affecting the stability of pillars, the aspect ratio of w / h and the pillar load And pillared load S / P as the main influencing factors, the concept of contribution rate is introduced to determine the weight, taking into account the contribution of w / h and S / P to the stability of pillars under different occurrence conditions, Known measure model, and verified with 29 engineering examples both at home and abroad.Experimental results show that the accuracy of contribution rate determination weight and the unascertained measure model established for the stability prediction of pillars reaches 96.55%. The method is scientific, Rigorous, simple and reasonable, can provide some guidance for the stability prediction of pillars in engineering practice.