Search case studies for coal mining.
Boretrak Used to Detect Hole Deviation and Toe Burden
DynoConsult was called in to help reduce coal loss from blasting and determining why there were inconsistent results of face movement. There are several factors that can contribute to this problem. Some may not have an easy solution, but could be minimized by determining some of the dimensions that are taken for granted, such as face burden and borehole deviation.
Cast Blast Modeling
A view to identifying opportunities to improve operations.
Controlling Fume Generation with TITAN 9000xero
Dyno Nobel developed TITAN 9000xero to provide a practical, innovative and reliable solution for reducing post blast fume (NOx) when blasting in wet/damp, soft or fractured ground conditions. The product is based on TITAN 9000 emulsion with the inclusion of a bulk additive. The result is a high emulsion content, reduced weight strength bulk explosive. TITAN 9000xero can be delivered through a standard mobile processing unit (MPU) into the blasthole via auger or pump.
DIFFERENTIAL ENERGY® in Truck Shovel Overburden
As part of a continuous improvement process, DIFFERENTIAL ENERGY® has been introduced in the Truck/Shovel areas of the pit for trials. Multiple areas have been tested utilizing different densities on the top and bottom of the hole. The holes were then loaded with the same amount of explosives, or less, but due to the lower densities the explosives column height has been increased to improve energy distribution in the blast hole.
DYNO 42™ Used for Vibration Control
DYNO 42 used to pinpoint best delay sequence for vibration reduction
Highwall Stability Improvement through Less Blast Vibration and Displacement
Highwall deterioration leads to potential hazards
Improved Digability, Reduced Vibration in Truck Shovel Operation
Reduced vibration allows mine to disregard scaled distance limitations.
Recovering Revenue through Coal Loss Protection
After two and half years, working in two large open pit coal mines in Australia – a systematic process was developed to understand the site specific mechanisms and geological conditions that promote coal loss.
Seismograph Analysis Eliminates Complaints
As mining encroaches on neighboring properties, the need to develop a vibration monitoring program became paramount.
Signature Hole Analysis & DigiShot® Plus Reduce Blasting Complaints
Matching delay firing times to the local geology eliminates neighbor complaints while improving productivity.
Signature Hole Analysis for Vibration Control
The challenge for this mine is coming up with delay timing that gives optimum performance without exceeding the limit of 5 inches per second PPV at the well.
Through Seam Blasting
Through Seam Blasting improves mining efficiency by making it possible to blast through one or more coal seams during a single blast event. With precision timing, the mine was able to recover coal in a pit that had been dormant for 15 years due to the challenge of steeply dipping coal seams.
TITAN XL 1000 G Used to Eliminate NOx
Products that have shown to reduce NOx generation are typically lower density products than what is often used for cast blasting. The lower density results in less energy and the effective cast benefit is reduced. The goal is to find a product that will shoot clean and evaluate the cost versus cast benefit.
TITAN XL for Wet Blasting Conditions
TITAN XL emulsion was utilised as a water resistant product that could be chemically gassed to various lower densities. Instead of the 1.30 gm/cc density of the 50/50 blend, TITAN XL was brought down to 1.10 gm/cc. The product is pumped through a hose placed in the hole. This eliminates the need to de-water the blastholes.