Rock Blasting

• Geological mapping and fracture analysis

• Evaluation of weathering and freeze–thaw effects on rock behavior

• Vibration modeling to protect nearby structures and utilities

• Blast-zone delineation and public safety planning

This engineering phase defines charge spacing, timing, and sequencing to ensure predictable performance.

Specialized limited-access drills are used to operate safely on steep slopes, narrow benches, or environmentally sensitive corridors. Precise hole placement is essential to achieving controlled rock breakage and minimizing unintended disturbance.

Explosives are selected based on rock strength, structural sensitivity, and required fragmentation size. Delayed firing sequences distribute energy in a controlled manner, reducing peak vibration, flyrock potential, and slope destabilization.

During blasting operations, GSI utilizes:

• Seismographs to monitor ground vibration

• Containment measures where required

• Controlled exclusion zones and safety protocols

• Post-blast inspection and scaling to confirm stability

Following each blast, slopes are evaluated to determine if additional removal or stabilization measures are required.

Engineered blast sequencing minimizes impact on adjacent roads, railways, and facilities.

In granitic, metamorphic, or volcanic formations common across Western Canada, blasting provides efficient fragmentation compared to mechanical methods.

Specialized drilling systems allow work on steep slopes and remote corridors where conventional excavation equipment cannot operate.

As a geotechnical design-build contractor, GSI integrates blasting with scaling, rock bolting, mesh installation, and shotcrete to deliver complete slope stabilization solutions.

Blasting plans are developed to align with provincial vibration standards and environmental requirements, including dust and sediment control measures.