Water

Project

A deep rock pressure tunnel bypassing an ageing aqueduct, including a 1,100-foot drop shaft.

Feasibility through detailed design for a deep pressure tunnel and vertical drop shaft.

Over 900 feet of cover demanded careful characterisation of jointed rock and a lining concept capable of managing long-term groundwater pressure.

Scope of work

  • Tunnels & Underground Engineering
  • Advisory Consulting
Hoffman Tunnels provided tunnel and underground design, engineering and construction-phase support.

Project facts

Cover
900+ ft
Drop shaft
1,100 ft
Type
Pressure rock
Completion
2015
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