中文摘要：

为准确评价岩石可爆性（RMB）,解决用精确数度量可爆性指数（BI）造成部分信息损失的问题,建立基于修正BI公式的RMB评价模型。利用基于结构元的模糊多元线性回归（FMLR）模型,以爆破漏斗体积、爆破块度分布中的大块率等6个指标为自变量,BI为因变量,对指标重要性进行排序和约简,修正原BI公式,并根据该修正公式对6组工程实例进行测试。结果表明：影响RMB等级的6个指标中,爆破漏斗体积较重要,岩体纵波声速较不重要;修正BI公式含5个变量,比原公式少1个;模型评价结果与实际较吻合。

英文摘要：

In order to assess RMB accurately and efficiently, and decrease the loss information of rock mass BI, a modified BI calculation formula-based model was built for assessing the RMB. By using the fuzzy structured element-based FMLR model six indexes were sequenced according to their influence on BI. The model was applied 6 groups of engineering examples. The results show that among the six indexes affecting BI, the blasting crater volume is the most important and the longitudinal wave velocity of rock is less important, the modified formula contains five variables with one less than the original one, and the result of assessment matches the actual result.