Operating guidelines for dragline stripping operations; analysis of tandem systems. Final technical report as of 31 August 1979

Technical Report · Mon Oct 01 04:00:00 EDT 1979

DOI:https://doi.org/10.2172/5480481· OSTI ID:5480481

Cook, F.; Lappi, R. L.

Practical guidelines for choice of dragline block length, bench height, pit width, and dig/cast patterns are developed for single seam, dragline-based hillside and hilltop stripping operations in northern and southern Appalachia. They are based on interviews of 45 dragline operators and computer analysis of dragline cycle time data for almost 10,000 cycles for 20 draglines in four states. The factors affecting philosophies and decisions are documented. Analyses of observed dozer/dragline mining operations determined that the observed operations are not true tandem systems utilizing the production capability of dozers in a systematic manner. Models are constructed to analyze the potential of tandem dozer/dragline systems and tandem loader/truck/dragline systems. Conclusions are that significant productivity and cost benefits may be available with deep dozer benching, particularly for small dragline operations. Loader/truck/dragline systems provide capability for deeper digging than is possible with a dragline alone or with a dozer/dragline system, but do not appear economically competitive within the operating range of a dragline or a dozer/dragline system.

• Research Organization: Mathtech, Inc., Princeton, NJ (USA)
• OSTI ID: 5480481
• Report Number(s): FE-9110-1(Vol.1)
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
APPALACHIA
COAL DEPOSITS
COAL MINING
COAL SEAMS
COST BENEFIT ANALYSIS
EARTHMOVING EQUIPMENT
EQUIPMENT
EXCAVATION
GEOLOGIC DEPOSITS
MATERIALS HANDLING EQUIPMENT
MINING
MINING EQUIPMENT
NORTH AMERICA
RESOURCES
SURFACE MINING
TIME DEPENDENCE
USA