Results 71 to 80 of about 4,150 (219)

Study on oxidation characteristics of coal gangue with different moisture content under water immersion drying [PDF]

Coal gangue, which accumulates in the open air, is modified by immersion in rain, and exhibits different tendencies to spontaneous combustion in different areas of precipitation.
Jing ZHANG, Chenhong ZHOU, Xuping LI, Xiaopeng REN, Jianan YAO, Zhi LI, Tianyu LI   +6 more
core   +1 more source

Study on the prediction of gangue content rate in fully mechanized caving face based on DeepLab v3+

Gong-kuang zidonghua
To tackle the challenge of accurately determining the volumetric gangue content rate under actual stacking conditions of coal-gangue in fully mechanized caving faces, a prediction method based on the DeepLab v3+ model was proposed.
WANG Zhifeng, WANG Jiachen, LI Lianghui, AN Bochao   +3 more
doaj   +1 more source

Coal-Gangue Interface Detection Based on Ensemble Empirical Mode Decomposition Energy Entropy

IEEE Access, 2021
To realize the unmanned automation of the full mechanized caving, the bottleneck problem of coal-gangue interface detection in top coal caving must be solved first. Targeting coal-gangue interface detection on fully mechanized mining face, an alternative
Wei Liu, Peiyao Li, Keyu Wang, Lu Lu, Manyu Zhao, Wenbo Yang   +5 more
doaj   +1 more source

Detection of Coal and Gangue Based on Improved YOLOv8

Sensors
To address the lightweight and real-time issues of coal sorting detection, an intelligent detection method for coal and gangue, Our-v8, was proposed based on improved YOLOv8. Images of coal and gangue with different densities under two diverse lighting environments were collected.
Qingliang Zeng, Guangyu Zhou, Lirong Wan, Liang Wang, Guantao Xuan, Yuanyuan Shao   +5 more
openaire   +3 more sources

Stress Redistribution Mechanisms and Subsidence Control of Fluidized Gangue Backfilling in Underground Coal Mining: Integrated Experimental and Numerical Investigation

Energy Science &Engineering, Volume 14, Issue 5, Page 2476-2498, May 2026.
Fluidized gangue backfilling controls mining subsidence through stress redistribution in composite backfill‐pillar systems, reducing surface settlement and stress concentrations. Multi‐scale experimental and numerical analysis provides quantitative design parameters for optimizing ground control in sustainable underground coal mining operations ...
Weilong Zhang, Jie Zhang, Yuanzhen Zhang, Wenjing Liu, Liang Li, Deyi Nan, Guannan Zhao, Chen Yang, Haiqing Bian, Hua Shao, Xiao Zuo, Changtai Zhou   +11 more
wiley   +1 more source

Failure Characteristic and Stability Control of Gob‐Side Entry Retention With Narrow Roadside Filling Wall

Energy Science &Engineering, Volume 14, Issue 4, Page 2137-2152, April 2026.
A novel collaborative control technology of gob‐side entry retention with narrow roadside filling wall is proposed, wherein anchoring end of anchor cable must penetrate the boundary line of stress peak (plastic zone). ABSTRACT Gob‐side entry retention represents a major technological innovation in the history of coal mining, offering numerous ...
Wenxu Liang, Wei Fu, Ziwen Liu
wiley   +1 more source

Automatic separation method of coal and gangue based on wavelet transform

Gong-kuang zidonghua, 2018
In view of the problems of low recognition accuracy, multiple extraction parameters and low real-time processing efficiency of existing coal gangue recognition and separation methods based on image processing, an automatic separation method of coal ...
CHEN Li, DU Wenhua, ZENG Zhiqiang, WANG Junyuan, WANG Riju   +4 more
doaj   +1 more source

Study on the Reactivity Activation of Coal Gangue for Efficient Utilization

Materials, 2023
In this study, the research aim is to enhance the activity index of activated coal gangue and study its activation mechanism. The activation process of coal gangue was optimized through orthogonal tests, and the Back-Propagation (BP) neural network model was improved using a genetic algorithm.
Yanshao Hu, Xiaoyan Han, Zuozheng Sun, Peng Jin, Keliang Li, Fuke Wang, Jinwei Gong   +6 more
openaire   +2 more sources

Study on the Energy Evolution and Stability of Roadway Surrounding Rock Under the “Simultaneous Mining–Driving” Condition

Energy Science &Engineering, Volume 14, Issue 4, Page 2225-2247, April 2026.
Based on theoretical analysis, the energy‐evolution behavior of the surrounding rock at various depths on the solid‐coal side of the 221303 material roadway during the “advancing‐toward‐mining” process was first clarified. Numerical simulations were then performed to validate and elaborate on the theoretical results.
Wei Zhang, Peilin Gong, Kang Yi, Guang Wen, Libin Bai, Lizhu Liu, Chen Gong, Peng Li   +7 more
wiley   +1 more source

Coal gangue image recognition model based on improved U−Net and top coal caving control [PDF]

Coal gangue identification technology is a critical component for the automation of fully mechanized mining faces and represents a significant challenge within this domain.
Yong YUAN, Rang WU, Yongqi XIA, Libao LI, Zhenghan QIN, Yong LI   +5 more
core   +1 more source