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UBC Theses and Dissertations
Investigation of underground mine pillar design procedures Potvin, Yves
Abstract
The principal functions of underground mine pillars are to stabilize openings and to carry the load of overlying rock strata. They are often (partially or completely) recovered at a later stage when their stabilizing effect is no longer required. For economic reasons, an optimum-sized pillar is the smallest one satisfying safety requirements. Thus the pillar design problem consists of determining the pillar's minimum dimensions as the load approaches the ultimate pillar strength. Because the pillar's strength and the load acting upon it are both functions of many interrelated factors, which may vary as mining progresses, the determination of pillar dimensions is a complex task. Furthermore, the multiplicity of pillar shapes, sizes, rock material and functions add to the designers' problem. Consequently, pillar design programs are still generally performed as a trial-and-error process. In order, to improve the present pillar design practices (1) -AApillar classification is proposed to standardize the design procedure (2) The principal design methods, divided into four groups, are summarized and their applicability is is defined (3) A five-phase design procedure with design charts is developed (4) The design procedure is applied in analysing two case histories
Item Metadata
Title |
Investigation of underground mine pillar design procedures
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1985
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Description |
The principal functions of underground mine pillars are to stabilize openings and to carry the load of overlying rock strata. They are often (partially or completely) recovered at a later stage when their stabilizing effect is no longer required.
For economic reasons, an optimum-sized pillar is the smallest one satisfying safety requirements.
Thus the pillar design problem consists of determining the pillar's minimum dimensions as the load approaches the ultimate
pillar strength.
Because the pillar's strength and the load acting upon it are both functions of many interrelated factors, which may vary as mining progresses, the determination of pillar dimensions is a complex task.
Furthermore, the multiplicity of pillar shapes, sizes, rock material and functions add to the designers' problem.
Consequently, pillar design programs are still generally performed as a trial-and-error process.
In order, to improve the present pillar design practices
(1) -AApillar classification is proposed to standardize
the design procedure
(2) The principal design methods, divided into four groups, are summarized and their applicability
is is defined
(3) A five-phase design procedure with design charts is developed
(4) The design procedure is applied in analysing two case histories
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-05-28
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0081170
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.