We’re committed to being a good neighbor and we listen to and work with the community to minimize any unwanted impacts from stone blasting.
Electronic Detonator Precision and Timing Optimization Leads to Lower Costs and Reduced Community Perception
This Midwest quarry customer needed help to optimize their blasting program and to reduce risk exposure from blast complaints. Dyno Nobel proposed a transition to DigiShot® electronic detonators. First, a Signature Hole Analysis (SHA) program was introduced to aid in determining firing times for reducing peak particle velocity and enhancing high frequencies to minimize structure response.
Electronic Detonators Allow Quarry to Increase Production While Keeping the Neighbors Happy
By using Signature Hole Analysis modeling to develop alternative timing sequences, Dyno Nobel was able to increase the blast hole diameter allowing for pattern expansion and an increase in blast rock per hole. Pattern expansion resulted in lower drilling costs, and timing sequences kept vibration levels low, while enabling the quarry to increase production per blast event while ensuring minimal off-site ground vibration to satisfy the local market demand for stone.
Electronic Initiation and Waveform Analysis Improve Off-Site Blasting Effects
Electronic initiation systems provide accurate delay timing for today’s demanding blasting applications. Electronics also provide the explosive engineer with the ability to program precise delay times to further improve blast performance including reduced peak particle velocity (PPV) and increased frequencies (Hz) which minimizes ground vibration.
Expansion of Quarry Using TITAN® 1000 LD and DigiShot® Plus
Surrounded by numerous communities, the Graymont Marbleton Quarry was looking to expand its quarry number six.
Making Way for Increased Production of Hydroelectric Power
The team set out to drill and blast as much rock as possible to avoid the use of time consuming and costly mechanical rock breaking techniques. In addition, the rock needed to be excavated without excessive vibration damage to the existing electrical substation or the 100-year-old concrete dam.
Multiple Hole Configuration Test Shot for Optimum Firing Time and Vibration Prediction
Dyno 42 vibration control software utilized to determine optimum firing times with DigiShot® electronic initiation system.
Multiple Hole Configuration Test Shot for Optimum Firing Time and Vibration Protection
In order to ensure vibration levels will be below the required level, a detailed Signature Hole Analysis (SHA) was performed on a series of 5 holes with different loading configurations. This will allow the mine to achieve optimum firing times while also building a database for vibration predictions site specific to approaching neighboring houses.
Pinnacle Removal Near Million Dollar Homes
3D profile used to design each unique shot
Reducing Neighbor Complaints from Blasts
This stone quarry has one area close to neighbors where blasts in the area cause complaints. Historically, the vibration readings have been maintained well under legal limits. However, due to shot duration (458ms) and low frequency, the blasts have been perceived as poor by the neighbors.
Reducing Regulatory and Liability Exposure
Taking advantage of the flexibility and precision of the DigiShot® electronic initiation system and using alternative timing sequences designed through signature waveform analysis, one northeast U.S.A. quarry operator was able to reduce peak particle velocity values by over 50%. Reductions in ground vibration were realized without the loss of productivity, blast size, or fragmentation.