BibTex format
@inproceedings{Singh:2017,
author = {Singh, DR and Mishra, AK and Agrawal, H and Singh, SK},
pages = {3561--3568},
title = {Parametric analysis for underground metal mine working stability},
year = {2017}
}
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Citation
RIS format (EndNote, RefMan)
TY - CPAPER
AB - Fully grouted rock bolts are considered the most economical support system for exposed unsupported rock in various mining operations. The paper presents parametric study of an underground metal mine with the horizontal cut-and-fill method of mining at the depth of 150 meters from the surface through numerical simulation using Fast Lagrangian Analysis of Continua (FLAC3D). Four different height of extraction i.e. 3m, 5m, 6m & 7m has been excavated numerically to evaluate the induced stress value and its parametric variation with the different height of extraction. Factor of safety was calculated numerically for estimating the stability of different stope height. The performance of the bolts were studied by conducting series of in-situ pullout tests, and parametric analysis of stress along the length of the bolt at different extraction/stope height. The load-deformation curve of bolts indicates the de-bonding nature of bolt with axial deformation of 42-46 mm. From the parametric study, it can be apprehended that with lode width of 8m and average height of extraction/stope (5m) the underground working does not experienced any pronounced ground control problems. At extraction height more than 5m the induced stress values are more and the chances of roof fall and failure of rock bolts are higher.
AU - Singh,DR
AU - Mishra,AK
AU - Agrawal,H
AU - Singh,SK
EP - 3568
PY - 2017///
SP - 3561
TI - Parametric analysis for underground metal mine working stability
ER -