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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Stability assessment of long gateroad pillar in ultra-thick coal seam: an extensive field and numerical study
Zhijie Zhu,Danqi Li +1 more
TL;DR: Li et al. as discussed by the authors investigated the mechanical stability of the driven long gateroad pillar in Chinese underground longwall mining and concluded that the 50 m wide pillar is an ideal dimension for the future panels of Tongxin coal mine to achieve the maximum productivity and safety.
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Stability Evaluation of Multi-pillar and Roof System Based on Instability Theory
Journal ArticleDOI
Negative stiffness, incompressibility, and strain localisation in particulate materials
Rockburst concept and mechanism
TL;DR: In this article, the authors present a variety of rockbursts in five sections: (i) the rockburst introduction, (ii) classification according to triggering mechanisms and modeling approaches, (iii) the study of the above classifications, (iv) the criterion of rockburst, and (v) a brief summary of this chapter.
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.