一种基于加权聚类分析的岩体可爆性分级方法

A method for rock-mass blastability classifcation based on weighted clustering analysis

在对岩体可爆性影响因素进行综合归纳分析的基础上,对14种岩石静载和动载特性参数、岩石容重以及岩体完整性系数测试与计算的结果进行了线性相关性统计分析.结果发现,岩石静载抗拉强度、容重和岩体整体性系数三个指标线性相关性较低或基本不相关,可以同时采用且仅采用这三个指标对岩体的可爆性进行可靠描述.基于此结果,同时考虑到岩石爆破破坏的动载特性,对本钢矿业公司某矿山的14种岩石容重、静载抗拉强度、岩体整体性系数、动载冲击强度进行了加权聚类分析,提出了该矿山岩体可爆性分级的方法.

Based upon comprehensive analyses of the rock property parameters that may affect blastability, linear correlation analysis was made on the data obtained from the tests of static and dynamic properties, specific gravity and integrity coefficient of 14 types of rock. The result showed that the static tensile strength and specific gravity of rock, together with the integrity coefficient of rock-mass are lightly, or merely not, correlated. It was proposed that these three parameters, together with dynamic compressive strength, could be used to serve as the basic indexes for quantitative description of blastability of common rock-masses. Thereafter weighted clustering analysis was conducted and a new rock blastability classification method was established for an open pit mine of Ben-gang Mining Industry Company.