Journal ArticleDOI
Stability, instability and design of pillar workings
TLDR
In this article, the stability of pillar workings is discussed by generalizing the simple mechanism of the laboratory test to the mining situation, and it is proved that the workings will remain stable, regardless of the magnitude of the convergence experienced by the pillars, if the minimum slope of the load-convergence relations is greater than the smallest eigenvalue of K taken with a negative sign.About:
This article is published in International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts.The article was published on 1970-11-01. It has received 227 citations till now. The article focuses on the topics: Stiffness matrix & Rock mass classification.read more
Citations
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Journal ArticleDOI
Numerical-modeling-based assessment of the impact of two-end-type cable support on failure characteristics of yield pillars
Ze Xia,Ze Xia,Qiangling Yao,Qiangling Yao,Qiang Xu,Qiang Xu,Ma Junqiang,Ma Junqiang,Liu Zichang,Liu Zichang +9 more
TL;DR: In this paper, the impact of active cable support on the bearing capacity of coal pillars was investigated based on more than 40 numerical models of various pillar width/height (w/h) ratios and two-end-type-cable-based support designs.
Journal ArticleDOI
Strain Rockbursts Simulated by Low-Strength Brittle Equivalent Materials
TL;DR: In this article, the boundary conditions for excavation in deep underground engineering were analyzed and elastic adaptive boundary is an effective way to minimize the boundary effect of geomechanical model test, in order to simulate an elastic adaptive loading boundary, Belleville springs were used to establish this loading boundary.
Proceedings of the International Workshop on Numerical Modeling for Underground Mine Excavation Design
TL;DR: Esterhuizen et al. as discussed by the authors presented an efficient approach to numerical simulation of coal mine-related geotechnical issues, by D. P. Adhikary and H. H. Guo.
Dissertation
Development of a Fibre Bragg Grating Sensor for Rock Deformation Monitoring
TL;DR: Kanopoulos et al. as mentioned in this paper examined the theoretical and experimental performance of a fibre Bragg grating sensor for static and dynamic strain measurement in hard rock, and the experimental data confirm the feasibility of using the proposed sensor as a part of an integrated optical strain sensing network.
References
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Journal Article
A study of the strength of coal pillars
A.H. Salamon,M.D.G. Munro +1 more
TL;DR: In this paper, the strength of coal pillars in South African collieries is derived based on data obtained from a survey of actual mining dimensions, which include information concerning both stable and collapsed areas of mining.
Journal ArticleDOI
The failure of rock
TL;DR: In this paper, an analysis of the energy changes associated with the extension of Griffith cracks in tension and compression is made, which shows that the non-elastic behaviour can be described by a curved Griffith locus in the strain-stress plane.