Results 71 to 80 of about 12,324 (191)
Study on Relationships between Coal Fractal Characteristics and Coal and Gas Outburst
Procedia Engineering, 2011 AbstractThe influence factors for the coal and gas outburst can be divided into two categories. They are external factors and internal factors, respectively. The external factors include in-seam gas pressure, geological structure and so on, while the internal factors are mainly the coal characteristics themselves.
Zhang, S. +4 more
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Conjecture about mechanism of butterfly-shape coal and gas outburst in excavation roadway
矿业科学学报, 2017 Referring to roadway butterfly shape rock burst mechanism and nonlinear dynamic system theory, a conjecture about butterfly-shape coal and gas outburst mechanism in excavation roadway has been made, In this conjecture, the mechanical essence of coal and ...
Ma Nianjie +5 more
doaj
Simulation and control of coal and gas outburst induced by dynamic and static loads
Meikuang AnquanIn order to study the effects of multi factor coupling on micro-cracks, stress changes, outburst velocity, and outburst distance during coal and gas outbursts, including geostress, gas pressure, and dynamic disturbances, based on the particle method, we ...
Pu LI +4 more
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Analysis of world experience of determining the basic criteria of outburst danger [PDF]
, 2015 Проведено аналіз світового досвіду щодо раптових викидів та газових емісій в шахтах. Визначено найбільш важливі параметри, що характеризують схильність вугільного пласта до викидів. Встановлено фактори, що впливають на викиди в шахтах.
Бойко, В. В. +1 more
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The Influences of Structural Deformation on Coal and Gas Outburst Types
Chemical Engineering Transactions, 2017 Geological structure is the main control factor of coal and gas outburst. Characteristics and types of coal and gas outburst usually have great different in regions of different structural deformation patterns.
Deyu Xu
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National economic and environmental development study: the case of Pakistan [PDF]
Pakistan is a developing country bracing for significant economic growth and development in the future. In this regards, the country is poised to shift towards an increased reliance upon its indigenous coal reserves to fuel its development in the 2010 ...
Ahmed, Vaqar +4 more
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Experimental study on compound dynamic disaster in deep coal rock under gas and stress loading and unloading [PDF]
To explore the occurrence mechanism of compound dynamic disasters in coal rocks, this study conducted a true triaxial test simulating gas extraction and stress loading and unloading conditions. To differentiate behaviors among disaster types, the effects
Huang, Lei +5 more
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Applied SciencesCoal and gas outburst remains a critical and persistent challenge in coal extraction, posing a profound threat for mine safety. The underlying mechanisms of such disaster, particularly the gas-driven coal fragmentation, continue to elude comprehensive ...
Jie Zheng +4 more
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Advances in Civil Engineering, 2020 For the quantitative recognition and characterization of the flow characteristics of polymorphism coalbed gas in tectonic coal, experiments on pore morphology, pore diameter distribution, and methane adsorption law in outburst tectonic coal were carried ...
Jiazhuo Li +7 more
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Investigation on Fires in Coal Mines and Approach for Prevention – Case Study [PDF]
, 2013 Coal absorbs oxygen even at lower temperatures than the ambient temperature and they start heating up. This heating without any external source of supply of heat generally leads to due to auto-oxidation, also called spontaneous heating of coal.Due to ...
Bisoyi , Sunil Kumar +1 more
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