SMALL DIAMETER SHAFTS
SDI's well-qualified engineers have earned global recognition for their
successful shaft development in wide variety of ground and site
Meeting the special needs of small diameter shafts is no exception. Contractors, mine operators and engineering firms rely on SDI to provide innovation in the field that is both safe and cost effective.
- Conduits for Utilities
- Dewatering Systems for Underground Mines
- Emergency Egress
Given that the shortest distance between two points is a straight line, shafts often provide the underground operation 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.
Similarly, small diameter shafts are used to evacuate the underground works. A prime example is dewatering. Vertical turbine pumps are set on the surface and the column assembly and bowl assembly are installed straight down the shaft. Water is drawn up the column assembly and discharged at the surface. Vertical turbine pumps are capable of working at depths of up to 2,000 feet.
All shaft development is performed ahead of and independent of any underground work to eliminate delays.