Capping and Sealing Technology
nounPronunciation: /ˈkæpɪŋ ənd ˈsiːlɪŋ tɛkˈnɒlədʒi/
The application of impermeable or low-permeability layers (clay, geomembranes, or asphalt) over contaminated mine materials to prevent water infiltration, oxidation, and contaminant leaching into groundwater. This passive containment approach isolates hazardous materials and reduces long-term environmental impacts.
Plain English
Covering toxic mining waste with waterproof materials to prevent harmful substances from entering soil and groundwater.
Etymology & History
Usage
"The abandoned lead smelter site underwent capping and sealing technology installation with a two-layer geomembrane system to contain residual slag contamination."
Style guide notes: Specify cap material composition and thickness when describing particular capping designs.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What materials are used in capping and sealing technology?
Common materials include low-permeability clay liners, geomembranes (HDPE, LLDPE), asphalt concrete, and composite barriers with drainage layers.
How long does capping and sealing provide environmental protection?
Well-designed caps function for 50+ years with proper maintenance; longevity depends on material quality, installation, and climate conditions.
Why Test Candidates on This?
Capping and sealing technology is a primary passive remediation strategy tested in mine reclamation and environmental engineering certifications.
Required skill level: Mid