A STATISTICAL ANALYSIS ON THE RELA TIONSHIP BETWEEN SINGLE-HOLE BENCH BLASTING PARAMETERS AND FRAGMENTATI ON
In this paper，the correla tion of fragmentation gradient（n） and average fragment size（K50） wi th blasting test parameters for di fferent rock masses was revealed b y a statistical and analytical me thod.Blasting tests were conducted in Jinbeizhuang iron mine of Xuan hua Iron and Steel Company.The roc ks of three test sites were define d as soft，hard and very hard rocks according to Protodyakonov coeffici ent of rock strength.The burden，be nch height and charge weight were selected as blasting test paramete rs which affect the degree of frag mentation.The screening method was used for analysis of fragmentation .The fragment size distribution gr aphs were plotted based on analyti cal results.The Yates method was a pplied for analysis of variance.Th rough the Yates Table，the influenc es of single and combined blasting parameters on fragmentation of dif ferent rocks were analyzed and sig nificant and non-significant treat ment combinations determined.
NETL
NSTL
万方数据
维普
