Phase 3 Copper Concentration Plant Conveyor Tunnel Construction Project – Sungun Copper Mine

Method:

• Tunnel excavation using the SEM (Sequential Excavation Method)

Project Specifications:

• Tunnel length: 600 meters
• Excavation cross-section area: 41.5 square meters
• Portal dimensions: 7.15 × 6.39 meters
• Final lining cross-section area: 24.6 square meters
• Maximum tunnel overburden: 108 meters
• Total excavation volume: 25,000 cubic meters
• Forepoling operations: 5,500 linear meters

Major Challenges:

• Execution of operations in unstable and collapsing soil conditions.