Controlled Roof Collapse during Secondary Mining in Coal Mines
Author
Source
International Journal of Differential Equations
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-21, 21 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-07
Country of Publication
Egypt
No. of Pages
21
Main Subjects
Abstract EN
The problem considered is an investigation of the possible collapse of the roof between the pillar next to be mined in secondary coal mining and the first line of pillar remnants called snooks.
The roof rock between the pillar, which is the working face, and the snook is modelled as an Euler-Bernoulli beam acted on at each end by a horizontal force and by its weight per unit length.
The beam is clamped at the pillar and simply supported (hinged) at the snook.
The dimensionless differential equation for the beam and the boundary conditions depend on one dimensionless number B.
We consider the range of values of B before the displacement and curvature first become singular at B=B1.
The model predicts that for all practical purposes, the beam will break at the clamped end at the pillar.
The failure of the beam for values of B greater than B1 is investigated computationally.
American Psychological Association (APA)
Hutchinson, Ashleigh. 2012. Controlled Roof Collapse during Secondary Mining in Coal Mines. International Journal of Differential Equations،Vol. 2012, no. 2012, pp.1-21.
https://search.emarefa.net/detail/BIM-499524
Modern Language Association (MLA)
Hutchinson, Ashleigh. Controlled Roof Collapse during Secondary Mining in Coal Mines. International Journal of Differential Equations No. 2012 (2012), pp.1-21.
https://search.emarefa.net/detail/BIM-499524
American Medical Association (AMA)
Hutchinson, Ashleigh. Controlled Roof Collapse during Secondary Mining in Coal Mines. International Journal of Differential Equations. 2012. Vol. 2012, no. 2012, pp.1-21.
https://search.emarefa.net/detail/BIM-499524
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-499524