Results 131 to 140 of about 504 (182)

Rockburst mechanisms in tunnels and shafts

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1994
Abstract Rockburst occurrences in tunnels have been reported from many countries, and it is apparent that there are different concepts of “rockbursting.” In this paper, several different mechanisms of rockbursting are distinguished, and a clear distinction is drawn between source and damage mechanisms.
W.D. Ortlepp, T.R. Stacey
openaire   +2 more sources

Induced Mechanism of Stope Roof Rockbursts in Underground Excavation

57th U.S. Rock Mechanics/Geomechanics Symposium, 2023
ABSTRACT A rockburst is defined as a sudden and violent disruption of rock in underground excavation. Rockbursts have been regarded as the least understood and the most feared mining disasters. Excavation-induced stress redistribution may lead to slippage of some pre-existing faults or even a new faulting in the ...
J. Deng, X. Q. Wang
openaire   +1 more source

Microseismicity Characteristics Before and After a Rockburst and Mechanisms of Intermittent Rockbursts in a Water Diversion Tunnel

Rock Mechanics and Rock Engineering, 2021
As the buried depth of the tunnel increased, rockbursts occurred frequently during the tunnel boring machine (TBM) excavation of a diversion tunnel. In addition, multiple rockbursts occurred in the same area within a short period of time, seriously threatening the safety of workers and construction equipment.
Yucheng Wang   +6 more
openaire   +1 more source

Investigation of Rockburst Mechanisms and Rockburst Prediction Using Numerical Modeling Methods

2023
Rockburst is a sudden rock failure characterized by the breaking up and expulsion of rocks from their surroundings, accompanied by a violent release of energy. Due to its unpredictability and high intensity, rockburst is one of the most hazardous geological disasters. It has caused thousands of injuries and fatalities and significant economic losses to
openaire   +1 more source

Possible mechanism of rockbursts in coal mines

pure and applied geophysics, 1986
One of the important questions of rockburst prevention is the understanding of the mechanism of rockburst source. This question can be effectively studied by direct seismic observations in the rockburst regions. For this purpose, the distribution ofP-wave onset signs and the inversion of first motion amplitudes were utilized as the basic method.
V. Rudajev   +3 more
openaire   +1 more source

Geomechanical types and mechanical analyses of rockbursts

Engineering Geology, 2017
Abstract Rockbursts generally occur in highly stressed rock masses because of underground openings. To ensure the safety of construction works, factors that play a role in predicting and preventing rockbursts should be analyzed. Based on numerous geological and mechanical analyses of rockbursts in China, six basic geomechanical types of rockbursts ...
Tianbin Li   +4 more
openaire   +1 more source

Rockburst mechanism and prediction based on microseismic monitoring

International Journal of Rock Mechanics and Mining Sciences, 2018
Abstract In this study, the rockburst definition is comprehensively described and several main rockburst theories (the strength theory, the energy theory, the bursting liability theory, the rigidity theory and the instability theory) are analyzed.
Tian-Hui Ma   +6 more
openaire   +1 more source

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