Results 21 to 30 of about 21,178 (224)

Comparative analysis of coal and coal-shale intrinsic factors affecting spontaneous combustion

open access: yesInternational Journal of Coal Science & Technology, 2018
Coal and coal-shales tend to undergo spontaneous combustion under favourable atmospheric conditions. Spontaneous combustion liability index and intrinsic properties of coals and coal-shales varies between (above and below) coal seams.
M. Onifade, B. Genc
doaj   +1 more source

Prediction Model for Spontaneous Combustion of Coal around Boreholes Using Bedding Gas Drainage

open access: yesShock and Vibration, 2021
To accurately and reliably predict the time of spontaneous combustion of fractured coal around a borehole induced by gas drainage along the seam, this study performed an orthogonal test taking the No.
Youxin Zhao, Qingjie Qi, Xinlei Jia
doaj   +1 more source

Prediction method of coal spontaneous combustion based on relevance vector machine

open access: yesGong-kuang zidonghua, 2020
In terms of coal spontaneous combustion degree prediction, the radial basis function (RBF) neural network method is complex in structure and easy to fall into local optimum, the kernel function based on support vector machine (SVM) is sensitive to ...
LIU Bao   +4 more
doaj   +1 more source

Combustion behaviour of some biodesulphurized coals assessed by TGA/DTA [PDF]

open access: yes, 2010
Thermal analysis, i.e. TGA/DTA is used to study the changes in the combustion behaviour of microbially treated coals. In view of their high sulphur content and industrial significance three samples are under consideration, i.e.
Carleer, R.   +9 more
core   +1 more source

Spontaneous Combustion of Coal (III)

open access: yesFire Science and Technology, 1986
The isothermal thermogravimetric analysis of coal has been carried out by changing the oxygen concentration of the heating atmosphere at the temperature range of 400, 450, 500 and 600°C. The effect of oxygen concentrations of 1 - 50% of the flow gas is discussed based on the weight loss curves and the IR spectra.
Tetsuya Nishimoto   +2 more
openaire   +2 more sources

Different Prevention Effects of Ventilation Dilution on Methane Accumulation at High Temperature Zone in Coal Mine Goafs

open access: yesEnergies, 2023
In coal mine goafs, spontaneous combustion of coal can result in methane accumulation, which raises the danger of methane explosion disasters. As an atmospheric control tool, ventilation is applied to ensure air quality for avoiding disasters in ...
Lin Li   +5 more
doaj   +1 more source

Applying European approach to predict coal self-heating in Ukrainian mines [PDF]

open access: yes, 2019
Purpose is the prediction of coal self-heating and determination of the factors effecting the dynamics of emission of tracer gases (TG) used for routine control of coal self-heating within the production unit involving European approach. Methods.
Gamiy, Yu   +5 more
core   +1 more source

Prospects for the use of modern technological solutions in the flat-lying coal seams development, taking into account the danger of the formation of the places of its spontaneous combustion

open access: yesЗаписки Горного института, 2021
Spontaneous combustion of coal remains an important problem for coal mines, which can lead to an explosion of methane and coal dust. Accidents associated with spontaneous combustion of coal can cause significant economic losses to coal mining companies ...
Vladimir P. Zubov, Dmitrii D. Golubev
doaj   +1 more source

The evaluation of a risk degree for the process of a brown coal spontaneous ignition on dumps with using of modern numeric methods [PDF]

open access: yes, 2018
The article is a summary of information about evaluation of a risk degree for a brown coal spontaneous ignition which is realized on the base of a database analysis of information about the development of stative quantities and desorbated gases in the ...
Blata, Jan   +4 more
core   +1 more source

Susceptibility of coal to spontaneous combustion verified by modified adiabatic method under conditions of Ostrava-Karvina Coalfield, Czech Republic [PDF]

open access: yes, 2013
The susceptibility of coal to spontaneous combustion is a physical–chemical property of coal that can be determined by a laboratory test. A number of laboratory methods verifying the coal susceptibility to spontaneous combustion exist, e.g. the oxidation
Adamus, Alois, Zubíček, Václav
core   +1 more source

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