Mine Subsidence
nounPronunciation: /maɪn səbˈsɪdəns/
The sinking or collapse of surface land above underground mine voids, tunnels, or cavities resulting from ground instability. Subsidence can damage infrastructure, alter drainage patterns, and create hazardous surface conditions.
Plain English
The ground sinking inward when underground mine tunnels and cavities become unstable and collapse.
Etymology & History
Usage
"The abandoned coal mine experienced severe subsidence that created sinkholes across the property, necessitating ground stabilization and subsurface grouting."
Style guide notes: Specify subsidence depth and affected area when describing site conditions in reclamation planning.
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Frequently Asked Questions
What causes mine subsidence?
Underground voids, tunnels, and pillars become unstable or collapse, causing overlying surface to sink.
What are risks of mine subsidence?
Property damage, infrastructure failure, altered water drainage, and created sinkholes that are hazardous.
Why Test Candidates on This?
Subsidence assessment is critical for establishing post-mining land stability and safety standards.
Required skill level: Mid