Similarity Simulation Study of Block Ores Generation in Pillarless Sublevel Caving

Abstract

Abstract: In order to solve the problem of high big block ratio in Chengchao Iron Mine, similar material simulation tests as laboratory are made to simulate medium-deep hole blasting in different parameters based on similarity principle.And an optimal blasting program was maked.Mathematical analysis was made based on data obtained from tests.The results showed that blasting effect of single-roe hole is better than that of double-roe hole and the optimal blasting program is single row dual 12-hole with breaking interval of 1.8 m.This provides a scientific basis for making a program to decline big block radio.

Key words: Block ratio, Similarity principle, Blasting, Simulation

LI Bin, XU Meng-Guo, WANG Ming-Xu, ZHU Ming-De. Similarity Simulation Study of Block Ores Generation in Pillarless Sublevel Caving[J]. Metal Mine, 2013, 42(02): 1-6.

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Similarity Simulation Study of Block Ores Generation in Pillarless Sublevel Caving

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