Journal ArticleDOI
Rock burst process of limestone and its acoustic emission characteristics under true-triaxial unloading conditions
Manchao He,J.L. Miao,J.L. Feng +2 more
TLDR
In this paper, a single-face dynamic unloading tests under true-triaxial condition were carried out for Paleozonic marine sedimentation limestone samples produced by blocks cored from 1140m depth in Jiahe coal mine of China.About:
This article is published in International Journal of Rock Mechanics and Mining Sciences.The article was published on 2010-02-01. It has received 609 citations till now. The article focuses on the topics: Rock burst & Acoustic emission.read more
Citations
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Journal ArticleDOI
Cracking Processes in Rock-Like Material Containing a Single Flaw Under Uniaxial Compression: A Numerical Study Based on Parallel Bonded-Particle Model Approach
TL;DR: In this paper, a parallel bond model was used to numerically simulate the cracking process in rock-like material containing a single flaw under uniaxial vertical compression, where the inclination of the preexisting flaw was found to have a strong influence on the crack initiation and propagation patterns.
Journal ArticleDOI
Long-term prediction model of rockburst in underground openings using heuristic algorithms and support vector machines
Jian Zhou,Xibing Li,Xiuzhi Shi +2 more
TL;DR: The results indicated that the heuristic algorithms of GA and PSO can speed up SVMs parameter optimization search, the proposed method is robust model and might hold a high potential to become a useful tool in rockburst prediction research.
Journal ArticleDOI
Evaluation method of rockburst: State-of-the-art literature review
TL;DR: A comprehensive review of the research efforts since 1965, which includes empirical, numerical, statistical and intelligent classification methods, highlights the source of data, timeline of study and the comparative performance of various techniques in terms of their prediction accuracy wherever available.
Journal ArticleDOI
Damage stress and acoustic emission characteristics of the Beishan granite
TL;DR: In this article, the crack initiation stress and damage stress of the Beishan granite under uniaxial and triaxial compressions were determined, and they were shown to be independent of each other.
Journal ArticleDOI
In situ monitoring of rockburst nucleation and evolution in the deeply buried tunnels of Jinping II hydropower station
TL;DR: In this paper, a comprehensive monitoring campaign consisting of a digital borehole camera, cross-hole acoustic apparatus, and sliding micrometer was undertaken for in situ measurements in two specially excavated test tunnels B and F.
References
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Journal ArticleDOI
Dilatancy in the Fracture of Crystalline Rocks
TL;DR: In this paper, the authors measured volume changes of a granite, a marble, and an aplite during deformation in triaxial compression at confining pressure of as much as 8 kb.
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Generalized crack initiation and crack damage stress thresholds of brittle rock masses near underground excavations
TL;DR: In this paper, generalized crack initiation and crack damage thresholds of rock masses are proposed, where the crack initiation threshold is defined by σ1−σ3=A σcm and the crack damage threshold is determined by π 1−σ 3=B σ cm for jointed rock masses, where B is the uniaxial compressive strength of the rock masses and A is the material constant.
Journal ArticleDOI
Microfracturing and the inelastic deformation of rock in compression
TL;DR: In this paper, a new experimental method which increased the sensitivity of detection by several orders of magnitude over that of previous studies was used, and the pattern of crack occurrence for a wide variety of rocks and at confining pressures up to 5 kb was found to be closely related to the stress-strain behavior.
Journal ArticleDOI
Effect of the intermediate principal stress on rock failure
TL;DR: In this paper, the authors applied precise testing methods to an experimental study of the effect of the intermediate principal stress σ2 on failure of a granite, a limestone, and a dolomite.
Journal ArticleDOI
FLAC/PFC coupled numerical simulation of AE in large-scale underground excavations
TL;DR: In this article, a coupled numerical method is used to study acoustic emission (AE) and microseismic (MS) events at the Kannagawa underground powerhouse cavern in Japan, where two codes, Fast Lagrangian Analysis of Continua (FLAC) and Particle Flow Code (PFC), a distinct element code, are coupled.
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