Results 241 to 250 of about 69,019 (276)

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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Steady advance of coal and gas bursts

Acta Mechanica Sinica, 1988
This paper establishes a one-dimensional model to analyse the mechanism of coal and gas bursts. It is found that the intrinsic factor governing bursts is the coupling of the initiation of the moving of coal fragments with the gas seepage. A typical (strong) burst can be treated as a steady advance process.
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An overview of research into understanding coal burst

2019
Coal burst is a high safety and production risk in underground coal mines. It involves a sudden release of strain energy stored within the coal or rock mass due to the disturbance of an unstable state of equilibrium. To improve our understanding of coal burst, it is important to quantify the energy transition involved in this dynamic failure process ...
Ismet Canbulat, Chengguo Zhang, John Watson   +2 more
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Water Bursting Mechanism of Coal Floor with Pattern Dynamics

Advanced Materials Research, 2011
Coal floor water inrush is the reason that the deformation and failure of rock strata in floor is induced by mining stress, cracks gradually develop, grow and accumulate, catastrophe result in forming water inrush passages, finally floor water inrush occurs.
Zhao Ning Gao, Xiang Rui Meng
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Coal mass rating with regards to outburst and coal burst

Outbursts and coal bursts pose significant risks to underground coal mine workers. The burst propensity of a coal seam is represented by the three factors of the burst triangle: coal, energy, and isotropic mass. The most critical factor was determined to be isotropic mass controlling the storage potential and release rate of burst energy.
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Determination of coal burst risk zones using CT scanning of coal microstructure

The Australian Coal Association Research Program (ACARP) sponsored a research project (C28012 Extension) investigating the role of microfracture propagation contributing to the mechanism of gas related coal bursts. The research project used Computed Tomography (CT) scanning to identify microfracture networks and the spatial and statistic relationship ...
Heritage, Yvette, Venticinque, Gaetano, Knackstedt, Mark, Zhang, Yulai   +3 more
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Analysis of coal burst phenomenon in underground coal mines

Rock Mechanics and Rock Engineering: From the Past to the Future, 2016
C Zhang, I Canbulat, F Tahmasebinia
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Proposing a novel comprehensive evaluation model for the coal burst liability in underground coal mines considering uncertainty factors

International Journal of Mining Science and Technology, 2021
Jian Zhou, Manoj Khandelwal
exaly  

Fault-Induced Coal Burst Mechanism under Mining-Induced Static and Dynamic Stresses

Engineering, 2021
Wu Cai, Linming Dou, Guangyao Si
exaly  

A new criterion of coal burst proneness based on the residual elastic energy index

International Journal of Mining Science and Technology, 2021
Feng-qiang Gong, Song Luo
exaly