Results 21 to 30 of about 51,282 (223)

Risk analysis and control technology of coal spontaneous combustion in the working face of protected soft thick coal seam

open access: yesMeikuang Anquan, 2023
With the gradual increase of coal seam mining depth, the protective seam mining has become a key scheme to effectively reduce coal spontaneous combustion.
ZHU Jian, WANG Xiaohuan, LI Wei, SHEN Hedi
doaj   +1 more source

Distribution of spontaneous combustion three zones and optimization of nitrogen injection location in the goaf of a fully mechanized top coal caving face.

open access: yesPLoS ONE, 2021
In order to effectively prevent and control spontaneous combustion of residual coal in the goaf and reduce the waste of nitrogen caused by setting the position of nitrogen injection, 1303 fully mechanized coal caving faces of the Jinniu Mine are studied.
Yun Qi   +4 more
doaj   +1 more source

Modelling spontaneous combustion liability of carbonaceous materials

open access: yesInternational Journal of Coal Science & Technology, 2018
This paper presents predictive models to determine spontaneous combustion liability of carbonaceous materials (coals and coal-shales) using statistical analysis.
M. Onifade, B. Genc
doaj   +1 more source

Early warning and control methods of coal spontaneous combustion in close distance coal seams in outburst mines

open access: yesMeikuang Anquan, 2022
The coal seam group in the outburst mine has the characteristics of mutual influence in the mining process, the goaf is connected, there are many air leakage places, and the fire prevention work is difficult.
DONG Xiaoming   +4 more
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

Effect of Physical and Chemical Structure of Shengli Lignite on Its Spontaneous Combustion Tendency

open access: yesTaiyuan Ligong Daxue xuebao, 2021
A series of oxidized coal samples were prepared by oxidation of Shengli lignite in air at 140 ℃ and 160 ℃ for different time. The functional groups and pore structure parameters of coal samples were analyzed and tested by Fourier transform infrared ...
Lin GAO   +4 more
doaj   +1 more source

Dynamic prediction model of spontaneous combustion risk in goaf based on improved CRITIC-G2-TOPSIS method and its application.

open access: yesPLoS ONE, 2021
Due to the problems related to the numerous factors affecting the spontaneous combustion of goaf coal, such as sudden, uncertain, and dynamic changes, and the fact that the weight of the indexes in the prediction model of the spontaneous combustion risk ...
Wei Wang, Yun Qi, Baoshan Jia, Youli Yao
doaj   +2 more sources

Research on spontaneous combustion 'three zones' in goaf of fully mechanized working face with large mining height

open access: yesGong-kuang zidonghua, 2019
In view of goaf spontaneous combustion prevention of 12401 fully mechanized working face with large mining height in Shangwan Coal Mine, CO is determined as prediction index gas of coal spontaneous combustion and C2H4 is used as auxiliary index gas to ...
QU Shijia   +3 more
doaj   +1 more source

Prediction method and new monitoring technology of goaf spontaneous combustion fire

open access: yesMeikuang Anquan, 2021
The characteristic of mine goaf spontaneous combustion was introduced and summarized. The gas index method and temperature measurement method for predicting and forecasting goaf spontaneous combustion were analyzed.
CHEN Yang, WANG Wei
doaj   +1 more source

Estimation of greenhouse gas emissions from spontaneous combustion/fire of coal in opencast mines – Indian context [PDF]

open access: yes, 2016
There are a significant number of uncontrolled coal mine fires (primarily due to spontaneous combustion of coal), which are currently burning all over the world. These spontaneous combustion sources emit greenhouse gases (GHGs). A critical review reveals
Carras JN   +15 more
core   +1 more source

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