Results 21 to 30 of about 2,837 (177)

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

Energies, 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, Tiantian Liu, Zhiqiang Li, Xiangjun Chen, Lin Wang, Shuailong Feng   +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

Записки 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

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

Meikuang Anquan
With the continuous exploitation of coal resources, the economic losses and casualties caused by coal spontaneous combustion have become increasingly prominent.
Yang XIAO, Erchuan ZHANG, Lan YIN, Xing LU, Jun DENG   +4 more
doaj   +1 more source

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

Meikuang 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

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

Meikuang 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

Gas Sensing With Aerogels: A Critical Review on Structure‐Property Correlations and Performance Optimization

Advanced Science, EarlyView.
With high specific surface area, and adjustable interface, aerogel provides a multi‐functional platform for gas sensing. This review systematically links structural parameters (specific surface area, pore size, heterojunctions) to sensing metrics (sensitivity, selectivity, stability), critically evaluates optimization strategies, and outlines future ...
Hao Guo, Linheng He, Qinxin Wang, Man Yuan, Shoutian Qiu, Wei Liu, Sheng Cui   +6 more
wiley   +1 more source

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

Meikuang 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

Meikuang 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, SONG Zhaoxue, CHEN Anming, JING Xiyin, ZHAO Qingshan   +4 more
doaj   +1 more source

Bio‐Based Polyurethanes for Sustainable and Multifunctional Applications

Advanced Science, EarlyView.
Bio‐based polyurethanes prepared from vegetable oils, lignin, and polysaccharides have attracted increasing interest as alternatives to fossil‐derived polyurethanes. This review summarizes recent progress in their chemistry, structural engineering, and advanced applications, highlighting the roles of feedstocks, chain‐segment design, dynamic covalent ...
Xin Li, Henghui Deng, Shiwei Yu, Jiawei Huang, Zehong Chen, Dawei Zhao, Chaoqun Zhang   +6 more
wiley   +1 more source

Study on coal spontaneous combustion characteristics and precise prevention and control technology for gob-side entry driving in Shaanxi and Inner Mongolia mining areas

Meikuang Anquan, 2022
Deep mining in Shaanxi and Inner Mongolia mining areas is characterized by high mine pressure and high degree of broken coal. Leaving narrow coal pillars is easy to cause side air leakage along goaf, and the coal left in the adjacent gob will undergo ...
WU Jianbin, LI Dong, ZHANG Yankuan, TUO Longlong, WU Mingming, SUN Fengrong   +5 more
doaj   +1 more source