Vertical stress determination within backfilled mine stopes

Sivakugan, Nagaratnam, Widisinghe, Sankha, and Wang, Vincent Z. (2014) Vertical stress determination within backfilled mine stopes. International Journal of Geomechanics, 14 (5). 06014011-1. pp. 1-5.

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Determining the vertical stresses within underground mine stopes is necessary for designing the barricades that block the drives during filling. This paper discusses two different procedures that can be used for determining the vertical stress profile, which give different values of stresses. The difference is attributed to fixing the bottom of the stope, implying zero displacement in any direction. The reasons are discussed, and it is suggested that the method commonly used in numerical modeling (Method 2) is not necessarily the better of the two. The alternate method (Method 1) models the field situation better when the loadings at the bottom during filling are required, mimics the laboratory model tests, and gives the same stress profile for all stopes with any aspect ratio. The findings are applicable to backfilled trenches as well.

Item ID: 35398
Item Type: Article (Research - C1)
ISSN: 1943-5622
Keywords: mine stopes, backfills, vertical stress, arching, trenches
Date Deposited: 18 Sep 2014 01:55
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 100%
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 100%
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