岩爆危险性评价的变权物元可拓模型

摘要

In order to make objective evaluation of rock-burst risk,a comprehensive evaluation model is presented based on matter-element extension and variable weight theory. Firstly,the indicator data is done by regularization for solving the limi-tation of traditional matter-element;secondly,the weight is defined based on variable weight to avoiding subjectivity,and the object that is evaluated can active participation;thirdly, the maximum membership is replaced by asymmetric close degree;Lastly,the rock-burst risk level is determined by level variable eigenvalue of counting,the key indicators are determined by sensitivity counting. Taking Jiama Mine as an example,the evaluation results show that the grade of rock burst is weak and tend to non-rock-burst,which is coincide to the actual situation and already results. The key indicators are tendency index and stress index,the general sensitivity index is stress coefficient.%为客观评价岩爆危险性,将物元理论与变权理论结合,构建了变权物元评价模型.首先,对指标数据规则化处理,解决传统物元模型自身局限性;其次,基于变权理论确定评判指标权重,避免评价过程中的主观性,同时使得被评价对象主动参与综合评判;第三,以非对称贴近度代替传统模型中的最大隶属度;最后,通过物元等级变量特征值的计算结果对样本等级进行评定,以权重及特征值对指标的敏感性确定影响评价结果的关键性指标.以甲玛矿为例,计算结果显示该矿为弱岩爆等级,且偏向于无岩爆,与现场实际情况吻合,与已有评判结果基本一致;倾向性指数、应力指数为敏感性指标,应力系数为一般敏感性指标.