基于属性识别理论的岩体可爆性分级方法

Classification for Rockmass Blastability Based on Attribute Recognition Theory

选择岩石的密度、抗拉强度、冲击动载强度以及岩体完整性系数作为岩体可爆性分级评判指标,以相似数定义相似权的方法,按一种客观性标准确定指标的权重,应用属性识别理论建立基于相似权的岩体可爆性分级判别属性测度模型。针对一些岩石样本试验数据进行分析判别,说明模型的使用方法和岩体可爆性分级评判过程。由于属性识别理论能很好地解决某类问题具有多个模糊属性的综合评价,且置信度准则是根据评价集具有有序性这一特点而提出的,因而可使评价结果更为可靠;同时评价模型采用客观性权重,避免了权重确定中的主观性和随意性,保证了评价工作的客观性和准确性。

The specific density,tensile strength,impact dynamic strength and intactness coefficient of rockmass are chosen as the criterion indices for rockmass Blastability classification.An attribute measurement model for the rockmass blastability classification-discrimination is established based on similar weights which are defined by similar figures and determined in accordance with objective standard for indices,and by using attribute recognition theory.The application method of the model and the classification-discrimination process of rockmass blastability are demonstrated by the specific discrimination of the test data of some rock samples.As the attribute recognition theory can well solve the comprehensive assessment for a kind of issues involving several fuzzy attributes,and the confidence criterion is proposed on the basis of ordered evaluation sets,the assessment results are more reliable.Meanwhile,as the assessment model adopts objective weights,the subjectivity and randomicity can be avoided in the weight determination,thus guaranteeing the objectivity and accuracy of the assessment.