DRILL & BLAST TUNNELING

At Frontier-Kemper we are skilled at conventional Drill-and-Blast excavation as well as the Shotcrete Method (also known as the Sequential Excavation Method or New Austrian Tunneling Method)

Highway tunnels are often large in cross-section and require conventional Drill-and-Blast excavation methods. Frontier-Kemper led the joint venture projects on the Hanging Lake Tunnels on I-70 in Glenwood Springs, CO, the Haiku Approach & Tunnels on Hawaii's H3, and the Silver Cliff Tunnels on the shore of Lake Superior in Wisconsin.



CURRENT & RECENT DRILL & BLAST PROJECTS:
Blue Lake Expansion
John Hart Dam GSR
Waneta Tunnels

DRILL & BLAST TRACK RECORD:

Miles Completed: 9.55 miles
Miles Under Construction: 1.9 miles
Years of Expertise: 43 years

DRILL & BLAST EXPERTISE:

  • Hard Rock Tunneling
  • Soft Rock Tunneling
  • EPB/ Earth Pressure Balance Tunneling
  • Mixed Shield/Slurry Tunneling
  • Microtunneling

TUNNEL LINING

  • Cast-in-Place Concrete
  • Pre-Cast Concrete Segmental
  • Steel
  • Shotcrete
  • Steel Supports & Rock Dowels
  • Grouting