Subsidence Feature
nounPronunciation: /səbˈsɪdəns ˈfiːtʃər/
A ground surface depression or collapse resulting from underground mine workings becoming unstable or void spaces diminishing after mining activity ceases. These features can range from gentle settlement zones to dramatic sinkholes and can pose significant hazards to structures and infrastructure.
Plain English
A sinkhole or ground collapse caused by the collapse or settlement of underground mine workings.
Etymology & History
Usage
"The subsidence features at the former coal mine required extensive ground stabilization before residential development could be approved."
Style guide notes: Distinguish between acute subsidence (sudden collapse) and chronic subsidence (gradual settlement) in technical descriptions.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What causes subsidence features in abandoned mines?
Underground voids from mining collapse or gradually compact as supporting materials fail, causing ground surface settlement and depressions.
How are subsidence features mapped during reclamation?
Using ground-penetrating radar, surface surveys, and mine mapping records to identify potential failure zones before remediation design.
Why Test Candidates on This?
Subsidence feature mapping and mitigation are critical safety and liability concerns in abandoned mine reclamation planning.
Required skill level: Mid