Drill Tech Drilling and Shoring, Inc. has built and rehabilitated tunnels and shafts for a wide range of clients, including railroads, water districts, utility companies and wineries. We have constructed tunnels and shafts from 6 feet to over 30 feet in diameter, utilizing a a wide range of excavation techniques including drill and blast, hand spading, road header and excavator. Drill Tech also is experienced in a wide range of ground support types including steel sets, lattice girders, shotcrete, linerplate, timber sets and rock bolts.
For more information on tunnel and shafts contact us.
Shafts are vertical openings commonly constructed at sending and/or receiving ends of new tunnel or pipeline construction. They enable the supply of equipment, personnel, material, and support systems for tunneling activities. Drill Tech has significant experience in excavating and supporting shafts to depths over 1,000’ in numerous ground types, including “gassy” shafts. Support options for shafts vary from CSM and secant wall support through overburden to rock anchors, steel sets, and shotcrete and concrete in rock. in dewatered ground conditions.
For more information on shafts contact us.