基于未确知测度理论的岩体可爆性分级综合评价

Comprehensive evaluation of rock mass blastability classification based on Uncertainty Measurement Theory

选取岩石密度、抗拉强度、岩体完整系数、波阻抗、抗压强度、普氏坚固性系数等6个因素作为岩体可爆性分级综合评价模型的评判指标。基于未确知测度理论,建立未确知测度评价模型,结合熵权法和置信度评判准则确定了6个评判指标的权重以及评价等级的判定标准,得到岩体可爆性分级的最终评价结果。运用该综合评价模型对贵州省晴隆县某露天矿3个采区岩体可爆性难易程度进行综合评价,并对该标段内不同采区爆破进行优化指导,取得了较好的预期效果。

On the basis of the Uncertainty Measurement Theo- ry, six factors of rock density, tensile strength, rock mass integri- ty coefficient, wave impedance, compressive strength and Platts firmness coefficient, etc. are selected as evaluation indexes for the comprehensive evaluation model of rock mass blastability classifi- cation. The final evaluation results of the rock mass blastability classification are obtained by building the evaluation model of un- certainty measurement and determining the weight of evaluation indexes and the judgment standard for evaluation grade using the entropy weight method and the incredible recognition rule. The comprehensive evaluation is made on the degree of difficulty of bla stability of the rock mass in 3 mining areas of an open pit mine in Qinglong County, Ouizhou using the comprehensive evaluation model and the optimization guidance is given for blasting in the dif- ferent mining areas of the section with the desired results a- chieved.