A CASE STUDY ON LONG HOLE RAISING BY SHOOTING TO RELIEF HOLES

来源期刊：中国有色金属学报(英文版)1997年第3期

论文作者：Ding Dexin

文章页码：160 - 163

Key words：long hole raising; shooting; relief holes

Abstract: A case study was conducted on long hole raising by shooting to relief holes, the results showed that some advanced technology indexes such as the advance of each blasting round arrived at 7～9 m in a 9 m×3.5 m large area raise have been obtained. In addition, rules were recommended for planning the raising technique.