Results 21 to 30 of about 843,741 (156)

Research on active roof control space of fully mechanized caving support based on motion posture perception [PDF]

open access: yesMeitan xuebao
The fully mechanized top-coal caving support is a critical device that serves both as a support mechanism and an active means for top-coal caving in fully mechanized top-coal caving mining operations.
Qingliang ZENG   +5 more
doaj   +2 more sources

Intelligent recognition of coal and rock based on wavelet packet multi-scale fuzzy entropy and weighted KL divergence

open access: yesGong-kuang zidonghua, 2023
Intelligent recognition of collapsed coal and rock is a prerequisite for intelligent coal caving. Real-time and precise recognition of collapsed coal and rock can avoid the problem of 'under caving' or 'over caving' of top coal caused by manual coal ...
LI Yiming
doaj   +1 more source

Automatic operation and manual intervention analysis system for intelligent fully mechanized caving face

open access: yesGong-kuang zidonghua, 2020
In the context of intelligent fully mechanized caving and mining, it is important to consider not only the cutting by the shearer, but also the coal caving at the back of the support and top coal recovery.
HAN Xiuqi   +4 more
doaj   +1 more source

Three-dimensional simulation of feeding and coal caving in fully mechanized caving face based on YADE

open access: yes, 2022
Based on the discrete element development environment YADE under Linux environment, this paper develops a three-dimensional simulation system for continuous feeding and coal caving in fully mechanized caving face.
YANG Yi, GAO Yang, LUO Kaicheng, WANG Keping, FEI Shumin
core   +1 more source

Top-coal initial caving law of continuous group caving method in extra-thick coal seams

open access: yes, 2023
In order to clarify the law of top coal caving with continuous group caving method in extra-thick coal seams, this study investigated the influences of the caving openings width on the morphological characteristics of caving body, the evolution law of ...
He Ziang   +3 more
core   +1 more source

Development of Intelligent Technologies and Machinery for Coal Mining in China’s Underground Coal Mines

open access: yes中国工程科学, 2023
the carbon peaking and carbon neutralization goals and the wave of intelligent coal mine construction, China’s coal machinery industry will transform and upgrade toward intelligence, green, safety, and efficiency.
Ge Shirong   +6 more
doaj   +1 more source

Top coal recovery at different caving positions.

open access: yes, 2023
The re-mined face using top coal caving system is the most applicable method for recovering the remaining reserves of a previous partially-mined thick coal seam.
Chunhua Zhang (148898)   +3 more
core   +1 more source

Development of innovation team construction and key technology research in coal mine intelligence

open access: yesGong-kuang zidonghua, 2022
This paper analyzes the outstanding technical weaknesses in the intelligent construction of coal mines in China. This paper puts forward 12 innovative research and development directions, including intelligent system design, information infrastructure ...
WANG Guofa, FU Jiaxing, MENG Lingyu
doaj   +1 more source

Study on Caving Property of Top Coal in Fully Mechanized Caving Face with Double Inclined and Large Dip Angle

open access: yes, 2020
In order to study the influence of different incline angles on the shape of top coal caving body, and the influence of different strike angles and different caving styles on the top coal caving rate of large angle fully mechanized top coal caving face ...
ZHANG Bei, YANG Yuanzhong
core   +1 more source

Image feature extraction and recognition model construction of coal and gangue based on image processing technology

open access: yesScientific Reports, 2022
Using image recognition technology to realize coal gangue recognition is one of the development directions of intelligent fully mechanized caving mining.
Lei Zhang   +4 more
doaj   +1 more source

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