📋 Case Study
Open Pit Gold Mine Blast Optimization with Community Vibration Consent
Community opposition due to unmonitored blast vibrations damaging adobe homes and sacred sites
🏗️ Project Overview
La Arena Gold Mine, Peru – Expansion Phase II
🎯 Challenge
Community opposition due to unmonitored blast vibrations damaging adobe homes and sacred sites
🔧 Design Approach
Integrated participatory vibration monitoring network co-installed with local technicians; blast design revised using real-time feedback and heritage-sensitive delay sequencing
📐 Key Calculations
Peak Particle Velocity (PPV) Threshold
PPV = k × (D/R)^n
Result: 1.2 cm/s max at heritage site boundary
Aligned with UNESCO vibration limits for earthen structures
Community Monitoring Coverage
Sensors per km² × Local Technician Certification Rate
Result: 8 sensors + 12 trained locals
Ensured data sovereignty and trust
📊 Results
98% community acceptance of blast schedule; 40% reduction in vibration complaints; UNESCO recognized co-monitoring as best practice💡 Lessons Learned
- •Co-installed sensors increased data legitimacy
- •Training locals created long-term capacity
- •Delay sequencing must respect ceremonial calendars
✅ Key Takeaways
- 1Co-installed sensors increased data legitimacy
- 2Training locals created long-term capacity
- 3Delay sequencing must respect ceremonial calendars