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1-800-331-0175 World Leader In Large Diameter Shaft and Geotechnical Construction Solutions

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TUNNEL industry


Shaft Drillers International provides tunnel contractors with a single source for both shaft development and geotechnical construction, delivering turnkey ground construction solutions for both rural and urban environs.

The depth of our problem solving extends beyond the most challenging ground conditions; because ground stabilization and shaft development is self-performed by SDI in house and in real time, SDI delivers optimum efficiencies and the greatest alleviation of risk to our clients.

Compaction grouting field work to prevent settling includes:

  • Preconstruction Improvement
  • Structural Remediation
  • Sinkhole Stabilization
  • Settlement Control
  • Alternatives to Deep Foundation Systems

SDI's large diameter shaft company delivers more than 20 years of experience in mine shaft development. Today, we are currently pregrouting shafts to depths approaching 2,000 feet. Tunnel contractors are using this unrivaled expertise to meet the growing demands for larger diameter ventilation and access shaft development.

SDI small diameter shafts provide underground operations with the shortest possible route to the surface. Utilities, such as electrical power, pneumatics (air) and communications, can be transported or generated above ground and then dropped straight down the utility shaft for distribution as required.

  • All work is typically performed ahead and independent of any underground activity keeping projects isolated from underground operations.
  • No underground access required as all work is safely conducted from the surface thus eliminating the risk of personnel having to enter the shaft during construction.
  • Initial access shafts for underground development produce appreciable savings in both project schedules and construction costs.
  • Fully developed shafts are lined according to application and material efficiencies.Final liners available in steel, concrete or composite materials.

This kind of experience ensures SDI clients in the tunnel industry receive the most cost effective solutions for the most challenging subsurface problems.



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