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Optimization of coal recovery from open pits

Technical Report:

Abstract

The design techniques of the Pit Slope Manual were successfully applied in a case study concerned with optimizing the design of coal mines. A steeply dipping multiple seam deposit, being mined by the truck-shovel combination, was selected for the study. The criterion for optimum slopes was based on the financial consequences of each design, i.e., the resultant benefits and costs. Three alternative designs were analyzed. The first had an average highwall slope angle of 28 degrees and a final height of 290 m. The second had a 35 degrees slope angle and a 305-m wall height. The third had a 45 degrees slope angle and a 320-m wall height. Trade-off between benefits and increased cost of slope instability inherent in steeper slope angles was analyzed for the entire mine life through computer simulation of actual mining operations. The cost models developed were (1) No Cost, (2) Clean-up, (3) Lost Coal, (4) Early Mining, (5) Mine Abandonment, (6) Increased Haulage, and (7) Haul Road Re-establishment. (8 refs.)
Publication Date:
Feb 01, 1979
Product Type:
Technical Report
Report Number:
CANMET-79-5
Reference Number:
EDB-81-066699
Subject:
01 COAL, LIGNITE, AND PEAT; COAL MINING; COMPUTERIZED SIMULATION; DESIGN; ECONOMIC ANALYSIS; SLOPE STABILITY; ABANDONED SITES; ARIZONA; CANADA; COST; COST BENEFIT ANALYSIS; INCLINATION; INCLINED STRATA; MINE HAULAGE; OPTIMIZATION; ROADS; SURFACE MINING; ECONOMICS; GEOLOGIC STRATA; GEOLOGIC STRUCTURES; MATERIALS HANDLING; MINING; NORTH AMERICA; SIMULATION; STABILITY; USA; WESTERN REGION; 012000* - Coal, Lignite, & Peat- Mining
OSTI ID:
6761670
Research Organizations:
Department of Energy, Mines and Resources, Ottawa, Ontario (Canada). Canada Centre for Mineral and Energy Technology
Country of Origin:
Canada
Language:
English
Availability:
Canada Centre for Mineral and Energy Technology.
Submitting Site:
CLA
Size:
Pages: 130
Announcement Date:

Technical Report:

Citation Formats

Kim, C, Wolff, S F, Baafi, E Y, Cervantes, J A, and Coates, D F. Optimization of coal recovery from open pits. Canada: N. p., 1979. Web.
Kim, C, Wolff, S F, Baafi, E Y, Cervantes, J A, & Coates, D F. Optimization of coal recovery from open pits. Canada.
Kim, C, Wolff, S F, Baafi, E Y, Cervantes, J A, and Coates, D F. 1979. "Optimization of coal recovery from open pits." Canada.
@misc{etde_6761670,
title = {Optimization of coal recovery from open pits}
author = {Kim, C, Wolff, S F, Baafi, E Y, Cervantes, J A, and Coates, D F}
abstractNote = {The design techniques of the Pit Slope Manual were successfully applied in a case study concerned with optimizing the design of coal mines. A steeply dipping multiple seam deposit, being mined by the truck-shovel combination, was selected for the study. The criterion for optimum slopes was based on the financial consequences of each design, i.e., the resultant benefits and costs. Three alternative designs were analyzed. The first had an average highwall slope angle of 28 degrees and a final height of 290 m. The second had a 35 degrees slope angle and a 305-m wall height. The third had a 45 degrees slope angle and a 320-m wall height. Trade-off between benefits and increased cost of slope instability inherent in steeper slope angles was analyzed for the entire mine life through computer simulation of actual mining operations. The cost models developed were (1) No Cost, (2) Clean-up, (3) Lost Coal, (4) Early Mining, (5) Mine Abandonment, (6) Increased Haulage, and (7) Haul Road Re-establishment. (8 refs.)}
place = {Canada}
year = {1979}
month = {Feb}
}