Description of physical environment and of strip-mining operations in parts of Beaver Creek basin, Kentucky

Interactive method of solution of the space problem of planning the volume of mining operations in strip mining of coal, with implementation algorithm

Journal of Mining Science ◽

10.1007/bf02765638 ◽

1997 ◽

Vol 33 (6) ◽

pp. 572-581

Author(s):

A. S. Tanaino ◽

A. A. Botvinnik

Keyword(s):

Strip Mining ◽

Mining Operations ◽

Space Problem ◽

Interactive Method ◽

Method Of Solution

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Performance of a highwall in soft rock, Highvale mine, Alberta

Canadian Geotechnical Journal ◽

10.1139/t92-041 ◽

1992 ◽

Vol 29 (3) ◽

pp. 353-363 ◽

Cited By ~ 2

Author(s):

C. A. Small ◽

N. R. Morgenstern

Keyword(s):

Key Words ◽

Upper Cretaceous ◽

Sedimentary Rocks ◽

Soft Rock ◽

Mining Operation ◽

Open Pit ◽

Strip Mining ◽

Coal Deposit ◽

Mining Operations ◽

Pressure Regime

The Highvale mine, west of Edmonton, Alta., is a strip-mining operation with Upper Cretaceous soft sandstone and mudstone overlying the coal deposit. Highwalls cut in the soft rock experienced numerous failures from 1983 to 1985 that disrupted stripping and mining operations and posed a threat to safety. The performance of a 20–23 m highwall at Highvale was studied in 1987 and 1988 to gain insight to the mechanisms of failure. The study utilized surveying, slope indicators, and piezometers to determine the deformation and seepage pattern behind the highwall as it rebounded into the pit upon excavation. Translational movements were found to extend over 250 m behind the highwall along weak, probably presheared bentonitic mudstones. The sandstone and mudstone overburden was observed to extend toward the open pit. This affected the pore-pressure regime and led to a reduction in the mass strength of the sandstone and mudstone. The findings of this study contributed to a better understanding of the mechanisms of highwall failure in soft sedimentary rocks. Key words : highwall, deformations, failure, seepage, loosening, softening.

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An Application of the HFACS Method to Aviation Accidents in Africa

Aviation Psychology and Applied Human Factors ◽

10.1027/2192-0923/a000093 ◽

2016 ◽

Vol 6 (1) ◽

pp. 33-38 ◽

Cited By ~ 4

Author(s):

Isaac Munene

Keyword(s):

Human Factors ◽

Physical Environment ◽

Human Factor ◽

Flight Training ◽

African Countries ◽

Causal Factors ◽

Aviation Accidents ◽

Factors Analysis ◽

Adverse Weather ◽

Decision Errors

Abstract. The Human Factors Analysis and Classification System (HFACS) methodology was applied to accident reports from three African countries: Kenya, Nigeria, and South Africa. In all, 55 of 72 finalized reports for accidents occurring between 2000 and 2014 were analyzed. In most of the accidents, one or more human factors contributed to the accident. Skill-based errors (56.4%), the physical environment (36.4%), and violations (20%) were the most common causal factors in the accidents. Decision errors comprised 18.2%, while perceptual errors and crew resource management accounted for 10.9%. The results were consistent with previous industry observations: Over 70% of aviation accidents have human factor causes. Adverse weather was seen to be a common secondary casual factor. Changes in flight training and risk management methods may alleviate the high number of accidents in Africa.

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