Results 61 to 70 of about 514 (135)

Technology Research on the Fourth Panel Mining Large Height Fully-mechanized Caving Mining in Shangwan Coal Mine

MATEC Web of Conferences, 2015
According to the characteristics of the 1-2 coal seam of Shangwan coal mine 4th panel, this research analyzed the feasibility of sublevel caving hydraulic support in the fully-mechanized mining face through estimation method and numerical simulation ...
Liu Yingjie, Wang Xiaomou
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. [PDF]

PLoS One, 2021
Qi Y, Wang W, Qi Q, Ning Z, Yao Y.
europepmc   +1 more source

A research study of lightweight state perception algorithm based on improved YOLOv5s‐Tiny for fully mechanized top‐coal caving mining

Energy Science & Engineering
Real‐time monitoring of the coal caving process in fully mechanized mining is crucial for achieving intelligent and efficient top‐coal caving. While the coal gangue identification method, employing vision and deep learning, has advanced in the realm of ...
PengFei Shan, Tong Yang, XiaoChen Wu, HaoQiang Sun   +3 more
doaj   +1 more source

Experimental study on the evolution characteristics of dynamic load of hydraulic support top beam during coal caving

Gong-kuang zidonghua
Contact coal-gangue identification requires studying the bearing characteristics of hydraulic support top beams in fully mechanized top coal caving. However, existing research primarily focuses on the bearing characteristics of supports before and after ...
HUO Yuming, HU Wenshuo, GAO Peng, YAN Chuan   +3 more
doaj   +1 more source

Structure and deformation measurements of shallow overburden during top coal caving longwall mining

International Journal of Mining Science and Technology, 2017
Mining induced pressures are strong and overburden failure areas are large in top coal caving longwall mining, which constrains high production and safety mining.
Sheng Li, Chaojun Fan, Mingkun Luo, Zhenhua Yang, Tianwei Lan, Haifeng Zhang   +5 more
doaj   +1 more source

Research and application of top coal caving characteristics at end of fully mechanized caving working face in hard and thick coal seam with super large mining height

Meitan xuebao
Fully-mechanized caving mining with super-large mining height is an effective method for safe and efficient mining of thick and extra-thick coal seams. Aiming at the problem of poor top coal caving ability at the end of fully-mechanized caving mining in ...
Ying MA, Shijun LIU, Ziyan MA, Duanzhi MA   +3 more
doaj   +1 more source

Hydraulic weakening technology for unsupported top coal at the end of fully mechanized caving face

Gong-kuang zidonghua
To address the issue of excessive unsupported top coal length and delayed caving at the end of a fully mechanized caving face, a hydraulic weakening technology for face-end top coal in steeply inclined thick coal seams was proposed based on the coal ...
DONG Haofu, ZHANG Wei, SUN Guangjun, FU Huijian, LONG Zhaoxi, LIU Yang, LIU Dongliang, ZHU Xiaodong   +7 more
doaj   +1 more source

Key technologies and practices for safe, efficient, and intelligent mining of deep coal resources

Meitan kexue jishu
The geological conditions of deep coal resources are complex, and intelligent mining is the only way for the safe, efficient, and green development of deep coal resources. The complete set of intelligent mining technology and equipment that adapts to the
WEI LI, Xikui SUN
doaj   +1 more source

Research on the Law of Top Coal Movement and Influence Factors of Coal Caving Ratio for Fully Mechanized Top Coal Caving Working Face

Energies
To investigate the movement law of top coal and the influencing factors of coal caving ratio in fully mechanized top coal caving faces, this study adopts the theory of dispersoid mechanics. First, a top coal flow model was established without considering
Jinhu Zhang, Zhiheng Cheng, Sheng Lei, Kai Guo, Liang Chen, Zherui Zhang, Jiahui Chen   +6 more
doaj   +1 more source

Investigation on overburden failure and subsurface subsidence characteristics in fully mechanized top-coal caving of "Three-Soft" Thick coal seams. [PDF]

Sci Rep
Guo W, Yang W, Ge Z, Wang B, Li L.
europepmc   +1 more source