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Search Results - Drill & Blast, February 2012

your search of 'Drill & Blast, February 2012' has 6 results.

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Figure 1. The cost of energy is ever increasing.

Crushing
Achieving energy efficiency in the drill and blast process

To achieve energy efficiency - and ultimately carbon reduction - in the drill and blast process is a matter of continuous trial and error. Olav Kvist explains how it boils down to personnel and the information and tools at their disposal. Read more »
After only 30 metres of excavation work, pipe construction had caught up to development of the trenches at the New Beith Reservoir project.

Crushing
Precision blasting clears reservoir trench

Choosing blasting over machine excavation can save time and minimise disruption if backed by detailed blast modelling, as James Tiedgen explains. Read more »
A typical blast conducted at Victoria’s Western Highway  Realignment Project in April 2010.

Drill & Blast
Driller has close shave with quarry blast

A sub-contractor undertaking drilling operations, who was missed off a pre-blast checklist, escaped injury after being in close proximity to a blast in a Tasmanian quarry last year.  Read more »
The ROK 500 DTH hammer.

Attachments
DTH hammer for tough drilling

The ROK Series DTH 500 and 500Q are patented 127mm diameter class hammers that accept industry standard drill bits with 12 spline Ingersoll Rand QL5/QL50 shanks. Recommended bit sizes range from 140mm to 152mm (5.5” to 6”).

Read more »
Figure 1. John Floyd’s graph of suggested delay intervals between rows.  (In: Floyd J. Blast Dynamics: presentation. 2005.)

Case Studies
A Few Timing Concepts

Timing has long been considered the “dark art” of the blasting process, even with the advent of computer timing and blast design packages. Brent Buffham explains why timing in some cases is still a misunderstood aspect of the blasting process and how to address timing gaps. Read more »
Mobile conveying can incorporate a radial stacker for use in stockpile building.

Conveying
Advances in design technologies in drill, blast and conveying

The use of technology in quarry design is becoming more significant as the process of data collection within quarry operations improves. Carl Morandy and Alan Robertson crystal ball the future for the quarry industry. Read more »


 


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