Results 111 to 120 of about 6,494 (162)

Numerical simulation of rock bursts

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1991
Abstract The mathematical description of dynamic fracture processes, in particular of rock bursts in hardcoal mining, can be advanced by the use of dynamic iterative methods. From a comparison of two different numerical approaches the dynamic finite difference method as used in the FLAC program turned out to be the most suitable.
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Mechanisms of rock burst in hard and thick upper strata and rock-burst controlling technology

Arabian Journal of Geosciences, 2016
Rock burst frequently occurs during coal mining at the Huafeng Coal Mine because of the high-strength, thick conglomerate strata above the coal seam. Given this situation, theoretical analysis, physical simulation, and field measurement methods were applied to study the mechanism of rock burst of hard and thick upper strata in this paper.
Weijia Guo, Yangyang Li, Dawei Yin, Shichuan Zhang, Xizhen Sun   +4 more
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Study on fault induced rock bursts

Journal of China University of Mining and Technology, 2008
In order to study the rules of rock bursts caused by faults by means of mechanical analysis of a roof rock-mass balanced structure and numerical simulation about fault slip destabilization, the effect of coal mining operation on fault plane stresses and slip displacement were studied.
Zhi-hua LI, Lin-ming DOU, Cai-ping LU, Zong-long MU, An-ye CAO   +4 more
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Rock bursting phenomena in a superficial rock mass in southern central Sweden

Rock Mechanics Felsmechanik Mecanique des Roches, 1982
Rock Bursting Phenomena in a Superficial Rock Mass in Southern Central Sweden Rock bursting phenomena have been observed in connection with excavation of two shallow sited rock tunnels in the Forsmark area in southern, central Sweden. The tunnels are excavated in gneiss granite and the rock cover varies between 5–15 m.
A. Carlsson, T. Olsson
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Models of translatory rock bursting in coal

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1981
Abstract A model material and a model technique have been found which show, in laboratory tests, the typical features of translatory rock bursts (bumps) in coal mines. The qualitative observations made using the model, agree with theoretical predictions published earlier.
W. Burgert, H. Lippmann
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Investigation of Coal Burst Potential Using Numerical Modeling and Rock Burst Indices

2021
Coal bursts are typically defined as a rapid failure of coal or surrounding rock producing a violent release of energy and ejection of rock particles. This phenomenon is extremely complex and dynamic, and this has made it very difficult to predict. In the last decades, different researchers have aimed to understand the sources and mechanisms of failure
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Deep Mining Optimization of Rock Burst Mines

Applied Mechanics and Materials, 2013
To prevent threaten of impact disaster, high-pressure water is injected into coal face, which is most widely used in impact-type mine. In such cases, by analyzing the rock burst tendency of a particular type of deep mining pit and occurrence of the mining process, rock samples drilled from the coal mine were taken for the conventional mechanical ...
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Generalized model of rock bursts

Journal of Mining Science, 1993
A. N. Romashov, S. S. Tsygankov
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A 2-d model of skin rock burst and its application to rock burst monitoring

2020
A.V. Dyskin, K.B. Ustinov, L.N. Germanovich   +2 more
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Rock bursting as an instability phenomenon

Mechanics Research Communications, 1975
W.G. Burgert, H. Lippmann
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