High energy blasting
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 12, 2016
Grant Date -
Mar 10, 2016
app pub date -
Sep 9, 2014
filing date -
Apr 15, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of blasting rock, in mining for recoverable material, comprising drilling blastholes in a blast zone, 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 are partially loaded with a first explosive 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 meter of unblasted rock in the high energy layer and in which at least some of those blastholes are also loaded with a second explosive 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.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- F42D Class
- 58 Applications Filed
- 52 Patents Issued To-Date
- 89.66 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- F42D Class
- 35.71 % this patent is cited more than
- 9 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 12, 2028 |
