公开(公告)号：EP2558814A1

公开(公告)日：2013-02-20

申请号：EP11768287.2

申请日：2011-04-15

申请人： Orica International Pte Ltd

发明人： BRENT, Geoffrey, Frederick ,  GOSWAMI, Tapan ,  NOY, Michael, John ,  DARE-BRYAN, Peter

IPC分类号： F42D1/08 ,  E21C41/22 ,  E21C41/30 ,  F42D3/04

CPC分类号： F42D3/04 ,  F42D1/055 ,  F42D1/08

摘要： A method of blasting rock, in mining for recoverable material, comprising drilling blastholes in a blast zone (1), loading the blastholes with explosives and then firing the explosives in the blastholes in a single cycle of drilling, loading and blasting. The blast zone comprises a high energy blast zone in which blastholes (2) are partially loaded with a first explosive (5) to provide a high energy layer of the high energy blast zone having a powder factor of at least 1.75 kg of explosive per cubic metre of unblasted rock in the high energy layer and in which at least some of those blastholes are also loaded with a second explosive (6) to provide a low energy layer of the high energy blast zone between the high energy layer and the adjacent end of those blastholes, said low energy layer having a powder factor that is at least a factor of two lower than the powder factor of said high energy layer. The high energy blasting method provides improved rock fragmentation through increased explosive energy concentration while simultaneously alleviating deleterious environment blast effects.

摘要翻译： 一种在采矿中对可回收材料进行爆破的方法，包括在爆炸区域中钻探爆破孔，并用炸药装载爆破孔，然后在钻孔，装载和爆破的一个循环中对爆破物进行爆炸。 爆炸区域包括高能量爆炸区域，其中炮孔部分地装载有第一炸药以提供高能量爆炸区域的高能量层，其中粉尘系数为每立方米未喷砂岩石至少1.75公斤的爆炸物 高能量层，并且其中至少一些这些炮眼还装载有第二炸药，以在高能量层和这些炮孔的相邻端之间提供高能量爆炸区的低能量层，所述低能层具有 粉末因子至少比所述高能层的粉末因子低两倍。 高能爆破方法通过提高爆炸能量集中度，同时减轻有害环境爆炸效应，提高岩石破碎度。