Results 21 to 30 of about 1,037,713 (150)

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

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

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

Distribution Law of Spontaneous Combustion Danger Zone of Coal in Goaf Under Long Distance Extraction

open access: yesMeikuang Anquan, 2020
For the special case above the working face of Tashan Coal Mine, the numerical simulation software was used to study the distribution of oxygen molar concentration in the goaf under different mining distances and different amounts of nitrogen injection ...
DU Yang, WENG Xuze, QI Xuyao, HAO Jianfeng, CHEN Ruifeng, CHEN Yuezhen
doaj   +1 more source

Research progress of underground coal fire disaster mechanism, thermodynamic evolution and thermal energy utilization

open access: yesMeikuang Anquan
With the continuous exploitation of coal resources, the economic losses and casualties caused by coal spontaneous combustion have become increasingly prominent.
Yang XIAO   +4 more
doaj   +1 more source

Study on spontaneous combustion characteristics of oxidized coal in re-mining coal seam

open access: yesMeikuang Anquan, 2021
According to the current situation of spontaneous combustion of coal in the re-mining coal seam, the differences of spontaneous combustion characteristics of oxidized coal in Jinggezhuang Mine with four different re-mining times are analyzed.
ZHANG Yanfang, WANG Fusheng, WANG Jiantao
doaj   +1 more source

Architected Spatially Deterministic Multiscale Phase Segregation in Block Copolymer Composites for Augmented Radiative Cooling

open access: yesAdvanced Science, EarlyView.
Multiscale phase segregation in block copolymers enables spatially deterministic structuring from molecular to macroscopic scales, decoupling solar scattering and infrared emission for augmented radiative cooling. ABSTRACT Passive radiative cooling, which reflects solar irradiation while emitting heat through the atmospheric window, provides a ...
Mingxin Feng   +10 more
wiley   +1 more source

Experimental Study of Pre-oxidation Effect on Limit Parameters of Coal Secondary Spontaneous Combustion

open access: yesMeikuang Anquan, 2020
To study the effect of pre-oxidation on the limit parameters of coal spontaneous combustion, the primary oxidation and secondary oxidation processes of coal are simulated by the program heating device, the oxygen consumption rate, gas productivity ...
WANG Kai, HE Yunzhong, SHANG Bo
doaj   +1 more source

Precise prevention and control technology system of coal spontaneous combustion for Yanzhou Mining Area

open access: yesMeikuang Anquan, 2022
Based on the characteristics and laws of coal spontaneous combustion in Yanzhou Mining Area, this paper studies the construction of accurate prevention and control system of coal spontaneous combustion, including the research on accurate fire prevention ...
WANG Hongquan   +4 more
doaj   +1 more source

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