矿岩可爆性分级新方法

New method for rock blastability classification

综合考虑影响可爆性的多重因素,采用因子分析法对表征可爆性的多个指标进行因子分析,随后进行模糊聚类,最终采用4个确定可爆性的主因子分别为抗拉强度、波阻抗、完整性系数及孔隙率,并给出分级计算法。在此基础上,定义样本数据库,采用最小Hamming距离和Hamming贴进度校验分级可靠性,判别各类岩石可爆性等级,量化可爆性使不同区域岩石间具有可比性,同时简化分级难度使之易于现场操作。

Taking the multiple factors that affect the blastability into consideration, factor analysis of parame- ters which may affect blastability is proposed, which is followed with fuzzy clustering. Finally, 4 principal factors are used to serve as the quantitative description of blastahility. They are tensile strength, wave impedance, integrity index and porosity. In addition, a new method is given to calculate the blastability indexes. Based on the above foun- dation, sample database is defined, its reliability is examined using minimum hamming distance and hamming ap- proach degree. The blastability of different rocks is distinguished, so that it can be compared. Meanwhile, the prob- lem of classification is simplified to make it easy for site operation.