Parametric stability analysis of room and pillar method in deep coal mines
Other Title(s)
دراسة تحليلية لاستقرار طريقة الحجرة و العمود في مناجم الفحم العميقة
Author
Abd Allah, Wail Rashad al-Rawi
Source
Journal of Engineering Sciences
Issue
Vol. 43, Issue 2 (31 Mar. 2015), pp.253-262, 10 p.
Publisher
Assiut University Faculty of Engineering
Publication Date
2015-03-31
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The goal of this paper is, to examine the validity of tributary area method, which is used as an empirical mean to estimate pillar dimensions, in room and pillar mines, taking into consideration a safety factor.
A two-dimensional, linear elastic, finite element model (Phase 2D) is created for a simple case of a uniform pattern of room and pillar mine layout, that is lying flat 1200 m below ground surface.
Sensitivity analysis has been done to study the effect of horizontal-to-vertical stress ratio, K, on the maximum stress that pillar can sustain without failure.
Four cases have been presented in this investigation (K = 0.5, 1, 1.5 and 2).
The results reveal that, the maximum stress on the pillar increases as K increases.
Alternatively, factor of safety deteriorates as mining depth (i.e., increase of K-value) increases.
The results also show that displacements/convergence expand as mining depth goes down
American Psychological Association (APA)
Abd Allah, Wail Rashad al-Rawi. 2015. Parametric stability analysis of room and pillar method in deep coal mines. Journal of Engineering Sciences،Vol. 43, no. 2, pp.253-262.
https://search.emarefa.net/detail/BIM-819487
Modern Language Association (MLA)
Abd Allah, Wail Rashad al-Rawi. Parametric stability analysis of room and pillar method in deep coal mines. Journal of Engineering Sciences Vol. 43, no. 2 (Mar. 2015), pp.253-262.
https://search.emarefa.net/detail/BIM-819487
American Medical Association (AMA)
Abd Allah, Wail Rashad al-Rawi. Parametric stability analysis of room and pillar method in deep coal mines. Journal of Engineering Sciences. 2015. Vol. 43, no. 2, pp.253-262.
https://search.emarefa.net/detail/BIM-819487
Data Type
Journal Articles
Language
English
Notes
Record ID
BIM-819487