Backfill Material Selection and Placement
nounPronunciation: /ˈbækfɪl məˈtɪriəl səˈlɛkʃən ənd ˈpleɪsmənt/
The process of choosing appropriate materials (waste rock, processed ore, or imported fill) and carefully placing them to restore pit topography, achieve slope stability, and minimize contaminant leaching. Material selection considers geochemical properties, compaction requirements, and regulatory compliance.
Plain English
Choosing and positioning fill materials in mine pits to restore landscape shape and prevent environmental contamination.
Etymology & History
Usage
"Backfill material selection prioritized non-acid-generating waste rock to minimize long-term environmental liability at the reclaimed pit."
Style guide notes: Reference specific material types (e.g., 'non-acid-generating backfill') rather than generic 'backfill material' when precision is required.
Also known as
Contrasted with
Related Terms
Frequently Asked Questions
What materials are suitable for backfilling abandoned mines?
Non-acid-generating waste rock, processed tailings, and inert imported fill approved by regulators are acceptable backfill options.
Why is material selection critical in backfilling?
Poor material choice can cause slope failure, acid drainage, or contaminant leaching, requiring expensive remediation.
Why Test Candidates on This?
Fundamental to mine closure design approval, stability certification, and long-term environmental protection compliance.
Required skill level: Mid