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 Article
The Post-peak Failure Properties and Deformational Structures of Rocks under Conventional Triaxial Compression Conditions
TL;DR: Wyniki testow konwencjonalnego trojosiowego ściskania karbonskich i triasowych piaskowcow drobnoziarnistych as mentioned in this paper, prowadzono w serwosterowanej maszynie wytrzymalościowej MTS-810 NEW.
Journal ArticleDOI
Strainburst characteristics under bolt support conditions: an experimental study
TL;DR: In this article, the authors investigated the impact of bolt spacing on the performance of a true-triaxial rockburst testing system, which was equipped with an acoustic emission monitoring system.
Journal ArticleDOI
Modeling injection-induced seismicity through calculation of radiated seismic energy
TL;DR: In this article, an energy-based numerical methodology was developed to study roles of fluid injection in triggering seismic slip along preexisting faults, and the authors showed that fluid injection can trigger a rupture along both well-oriented and misoriented faults, although the notion of seismicity may be observed along the welloriented fault as early as the beginning of injection process.
Dissertation
Investigation of unstable failure in underground coal mining using the discrete element method
TL;DR: In this article, two discrete element models are evaluated for their ability to simulate unstable and stable compressive failure using the discrete element program Particle Flow Code in Two Dimensions (PFC2D): the bonded particle model and the displacement softening model.
Journal ArticleDOI
Influence of Intermediate Principal Stress on the Strainburst Characteristics of Beishan Granite with Consideration of End Effect
TL;DR: In this paper, an experimental study on the strainburst characteristics of Beishan granite under different intermediate principal stress (σ2) loading conditions was conducted using a servo-controlled true-triaxial rockburst test machine equipped with an acoustic emission (AE) monitoring system.
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.