High energy blasting
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...
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| creator | Noy, Michael John Brent, Geoffrey Frederick Dare-Bryan, Peter Goswami, Tapan |
| description | 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. |
| format | Patent |
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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. 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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.</description><subject>AMMUNITION</subject><subject>BLASTING</subject><subject>EARTH DRILLING</subject><subject>FIXED CONSTRUCTIONS</subject><subject>HEATING</subject><subject>LIGHTING</subject><subject>MECHANICAL ENGINEERING</subject><subject>MINING</subject><subject>MINING OR QUARRYING</subject><subject>WEAPONS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2016</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZBDxyEzPUEjNSy1Kr1RIykksLsnMS-dhYE1LzClO5YXS3Awqbq4hzh66qQX58anFBYnJQA0l8Y6hRgaGhkYmhiYWBk5ORsZEKgMA_DIh4Q</recordid><startdate>20161020</startdate><enddate>20161020</enddate><creator>Noy, Michael John</creator><creator>Brent, Geoffrey Frederick</creator><creator>Dare-Bryan, Peter</creator><creator>Goswami, Tapan</creator><scope>EVB</scope></search><sort><creationdate>20161020</creationdate><title>High energy blasting</title><author>Noy, Michael John ; Brent, Geoffrey Frederick ; Dare-Bryan, Peter ; Goswami, Tapan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_AU2011241480BB23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2016</creationdate><topic>AMMUNITION</topic><topic>BLASTING</topic><topic>EARTH DRILLING</topic><topic>FIXED CONSTRUCTIONS</topic><topic>HEATING</topic><topic>LIGHTING</topic><topic>MECHANICAL ENGINEERING</topic><topic>MINING</topic><topic>MINING OR QUARRYING</topic><topic>WEAPONS</topic><toplevel>online_resources</toplevel><creatorcontrib>Noy, Michael John</creatorcontrib><creatorcontrib>Brent, Geoffrey Frederick</creatorcontrib><creatorcontrib>Dare-Bryan, Peter</creatorcontrib><creatorcontrib>Goswami, Tapan</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Noy, Michael John</au><au>Brent, Geoffrey Frederick</au><au>Dare-Bryan, Peter</au><au>Goswami, Tapan</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>High energy blasting</title><date>2016-10-20</date><risdate>2016</risdate><abstract>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.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | AMMUNITION BLASTING EARTH DRILLING FIXED CONSTRUCTIONS HEATING LIGHTING MECHANICAL ENGINEERING MINING MINING OR QUARRYING WEAPONS |
| title | High energy blasting |
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