Slope Angle Reduction
nounPronunciation: /sloʊp ˈæŋɡəl rɪˈdʌkʃən/
The flattening of pit or dump slopes to lower angles through regrading, bench modification, or material removal to improve long-term geotechnical stability and reduce erosion potential. This reclamation technique addresses instability risks inherent in steep mining-created slopes.
Plain English
Making steep mine slopes less steep by reshaping the ground to prevent slides and improve stability.
Etymology & History
Usage
"Slope angle reduction from 45 degrees to 30 degrees improved long-term stability of the reclaimed pit wall."
Style guide notes: Express angles consistently as ratios (H:V) or degrees; specify whether angle reduction is complete or phased.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
Why reduce slope angles in mine reclamation?
Steeper slopes are unstable, prone to failure, and accelerate erosion; flattening improves long-term safety and environmental performance.
What is a safe reclaimed slope angle?
Varies by geology and materials; typically 2:1 or 3:1 (horizontal:vertical) for waste rock; engineers analyze specific site conditions.
Why Test Candidates on This?
Slope angle reduction is a practical reclamation technique addressing geotechnical and environmental hazards at abandoned mines.
Required skill level: Mid