Results 121 to 130 of about 1,201 (198)

Reasonable layout range of lower mining roadways in the close and variable interval coal seams mining: a case study

Scientific Reports
In the context of close-distance coal seam mining, the stress transfer mechanism following the extraction of the upper coal seam is crucial for the layout of roadways in the lower coal seam.
Nan Wang, Dapeng Yang, Yuliang Wang, Yang Li   +3 more
doaj   +1 more source

Sustainable Composites From Almond Shell Powder and Recycled Polyolefin Blends: Effect of Compatibilizer on Interfacial Adhesion and Properties

Polymer Composites, Volume 47, Issue 16, Page 14510-14527, 20 August 2026.
Schematic illustration of sustainable recycled polyolefin/almond shell composites showing the effect of MA‐g‐PP compatibilizer on interfacial adhesion, void reduction, and composite morphology for lightweight automotive applications. ABSTRACT This study reports injection‐molded sustainable composites developed from a hybrid recycled polymer matrix ...
Rebecca Sanchez, Suman Kumar Ghosh, Nur Fazreen Alias, Amar K. Mohanty, Manjusri Misra   +4 more
wiley   +1 more source

A research on destress mechanism of underlying roadway for gas outburst prevention in deep, low‐permeability coal seam [PDF]

Gas outbursts pose a significant threat in the mining of deep low‐permeability coal seams. As mining depth increases, there is a rise in coal and gas dynamic disasters, rendering the gas outburst prevention technology from shallow mining areas unsuitable
Jiadi Yin, Yu Wu, Hualei Zhang, Jianjun Cao   +3 more
core   +1 more source

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, Volume 38, Issue 43, 3 August 2026.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Research on Optimal Width of Coal Pillars in Both Sides of Abandoned Mining Areas and Tunnel Control Technology

Energy Science &Engineering, Volume 14, Issue 8, Page 3625-3637, August 2026.
This study primarily investigates the optimal width for coal pillar retention in both sides of the worked‐out face section. Taking the 42201 haulage roadway of the 42201 working face at Shengxin Coal Mine as the primary research target, it analyses the optimum width for coal pillar retention through theoretical calculations, numerical simulations, and ...
Shuaifeng Yin, Kanglei Han, En Wang, Yitao Yan, Xubo Zhao   +4 more
wiley   +1 more source

Stability Evaluation and Parametric Optimization of Coal‐Concrete Composite Bearing Systems Under Mine‐Water‐Induced Deterioration: Experiments and FEINN Analysis

Energy Science &Engineering, Volume 14, Issue 8, Page 3697-3725, August 2026.
Mine‐water immersion tests reveal pronounced coal weakening (vs. minor concrete degradation), identifying coal pillars as the stability‐limiting component in composite dams. A coupled FEINN framework quantifies extreme‐pressure stability and ranks multi‐parameter designs via a normalized multi‐indicator scheme, enabling optimized dam configuration for ...
He Wen, Hongchuan Dai, Guixin Zhang, Pengzhe Li, Tong Yang, Cang Gong, Renbo Gao   +6 more
wiley   +1 more source

Analysis and Optimization of Early‐Warning Indicators for Impact Critical Stress in Deep Soft Coal Seams

Energy Science &Engineering, Volume 14, Issue 8, Page 3726-3740, August 2026.
This study determines the impact critical stress early‐warning indicators for deep soft coal seams: 18 MPa (shallow holes), 20 MPa (deep holes), and 3 MPa/d daily stress change rate, via theoretical, experimental and simulation methods. ABSTRACT The accurate determination of early‐warning indicators for critical impact stress in deep soft coal seams is
Haichen Yin, Xiufeng Zhang, Atao Li, Yanliang Wang, Long Yuan, Chaohong Shi, Yang Chen, Caiping Lu, Liangjin Jiang   +8 more
wiley   +1 more source

Research on gas tracing technology of combined drainage in close distance outburst coal seam group

Meikuang Anquan, 2022
In order to solve the problem of gas measurement in combined drainage of close outburst coal seams, taking Nenghua Xiaotun Coal Mine in Guizhou Province as the engineering background, the method of combining carbon isotope method and stratified measurement is proposed to determine the proportion of gas drainage in any coal seam group, so as to provide ...
openaire   +1 more source

Iron Energy Carrier: Experimental Characterisation, Combustion Diagnostic and Benchmarking with Other Clean Metal Fuels

Energy Science &Engineering, Volume 14, Issue 8, Page 3862-3877, August 2026.
This study investigates how iron particles burn across a wide size range, revealing late‐stage nanoparticle release and a previously unrecognised shift in combustion behaviour near 118 µm. High‐speed imaging, PMT diagnostics and SEM analyses have been conducted.
Zakaria Mansouri
wiley   +1 more source

Study on the evolution of fractures in overlying strata during repeated mining of coal seams at extremely close distances [PDF]

In particular, the secondary development of overlying strata fractures can easily lead to the upper goaf, resulting in gas and water gathered in the goaf entering the working face of the lower coal seam through the overlying strata fractures, threatening
Daming Yang, Yun Sun, Linshuang Zhao, Jiabo Xu   +3 more
core   +1 more source