Results 171 to 180 of about 1,770 (209)

Study on the impact of stress effects on gas extraction in thick inclined coal seam caving faces. [PDF]

Sci Rep
Chen L.
europepmc   +1 more source

Research on surface subsidence laws and prediction models under repeated mining of multiple coal seams. [PDF]

Sci Rep
Guo S, Qiu S, Zhang D, Zheng W.
europepmc   +1 more source

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Robot control system for inspection of fully mechanized coal mining face

2021 18th International Conference on Ubiquitous Robots (UR), 2021
In order to realize the roboticization of fully mechanized coal mining face inspection, the fully mechanized coal mining face inspection robot control system was designed according to the mechanical structure of the hang inspection robot based on the flexible track designed by the team and the inspection requirements of the fully mechanized coal mining
Xuhui Zhang, Xinjian Huo, Yonggang Du
openaire   +1 more source

Investigation on the dust migration behavior and safety zone in the fully mechanized mining face

Environmental Science and Pollution Research, 2021
High dust concentration produced in the fully mechanized longwall mining face is a significant threat to the front-line workers. It is critical to discover the potential safety zone to ensure routine personnel operation. Fluent 2020 R1 is employed to reappear the spatial dust distribution based on the gas-solid coupling theory.
Xin-Xiao, Lu, Cheng-Yan, Wang, Yun, Xing, Cong, Shen, Guo-Yu, Shi   +4 more
openaire   +2 more sources

Research on Rotation Mining with Large Angle for Unequal and Fully Mechanized Mining Face

Advanced Materials Research, 2012
Coal is one of the non-renewable resources, and in our country at present also is the main source of energy. It is very important to improve the coal mining rate, to exploit and to use the coal reasonably. Saving coal resource is an important measure for our coal industries sustainable development. Because large amounts of coal under complex conditions
Zhi Tao Ma, Sai Jiang Liang, Yong Ping Wang   +2 more
openaire   +1 more source

Technological optimization of fully mechanized caving mining face with large mining heights

Journal of Coal Science and Engineering (China), 2013
Fully mechanized cave mining with large mining height is a new mining method, due to its large mining thickness and lower roadway excavation, the technology has been widely used in China’s thick seam mining. In order to improve the top-coal recovery ratio of fully mechanized cave mining with large mining height, a study was conducted on optimizing the ...
Lu-Jia Fan, Sheng-Li Yang
openaire   +1 more source

Study on Suddenly Extrusion Mechanism and Forecasting of Deep Mine Fully Mechanized Mine Head Face

Advanced Materials Research, 2011
In view of the Huai Nan mining area deep mine Dingji mine fully mechanized mine head face low-index outburst suddenly extrusion the region gas geological feature, analysis mechanism of the suddenly extrusion frictional sliding instability. The research gain sensitive index critical value drilling bits S and depth of hole coefficient S′, drilling gas ...
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Optimization of the fully-mechanized stoping face length and efficiency in a coal mine

Journal of Mining Science, 2013
The authors formulate a problem and present analytical solutions on optimizing length of a fully-mechanized stoping face based on the maximum profit criterion.
A. A. Ordin, A. A. Metel’kov
openaire   +1 more source

Research on “Playing Football” Type Roof Control in Fully-Mechanized Mining Face with a Super-Large Mining Height under the Background of 5G+ Big Data

Applied Sciences (Switzerland)
With the increase of mining height at the working face, the influence range of roof fractures in the goaf increases, the advanced supporting pressure on the coal wall increases, ground pressure becomes more intense, and roof support becomes more ...
Fukun Xiao, Lei Shan
exaly   +2 more sources

Mine pressure prediction model of fully mechanized mining face based on Improved Transformer

2022 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC), 2022
Yaping Liu, Lihong Dong, Ou Ye
openaire   +1 more source