Owner
Luck Stone Corporation
Client
Luck Stone Corporation
Cost
$13 million USD
Timeframe
April 2017
— June 2018
Services performed
Conceptual design with various tunnel options. Final tunnel design consisting of drawings, specifications, and calculations. Client support during bid phase.
Description
Luck Stone Corporation (LSC) opened a new quarry on the Western side of Goose Creek river, a component of the Virginia Scenic Rivers System. A tunnel connects the new Western quarry with the existing South-Eastern one below the river. The rock cover between the tunnel and the river was approximately 50 feet. The tunnel is 1275 feet long with a diameter of 45 feet. It is designed to accommodate large scale mining trucks as well as a conveyor belt for material transport which
is scheduled to be installed in the future.
is scheduled to be installed in the future.
Geology
Located within the Culpeper Basin, a sedimentary rock formation characterized to be of Lower Mesozoic Age. The existing Luck Stone quarry is situated in a Diabase intrusion (dyke) of this sedimentary rock.
Location
Ashburn, VA, USA
Highlights
- Sequential excavation sequence for south-east portal as tunnel entered the highwall at approx. 45 egree angle
- Tunnel crossing below goose creek with potential encouter of adverse geologic conditions
- Long bench excavation rounds
South-East portal excavation sequence
South-East portal excavation