Results 71 to 80 of about 4,764 (197)

Research on Coal Gangue Detection and Identification Method Based on Improved YOLOv7

Processes
The sorting of coal gangue is of great significance for improving coal quality, avoiding environmental pollution, and reducing labor costs. The image-based coal gangue sorting method has been proposed by a large number of researchers, but the complexity of the environment, the speed and accuracy of coal gangue detection and recognition methods, and the
Diandong Hou, Yiming Yang, Yan Liu, Guoli Bian, Zhenan Li, Mingchao Du, Lehua Zhao, Peng Zhang, Xizhai Zhang   +8 more
openaire   +1 more source

Distributed Fiber Optic‐Based Monitoring and Analysis of Flexible Molded Concrete Piers for Coal Pillar Free Mining

Energy Science &Engineering, Volume 14, Issue 1, Page 412-427, January 2026.
Using the pillarless mining face at Zhaozhuang Coal Mine as a case study, the research objective is to accurately and comprehensively understand the stress distribution and its evolution characteristics in flexible concrete pillars along the hollow support pillars under the influence of secondary mining movements during pillarless coal mining ...
Yanhui Zhu, Ye Tian, Peilin Gong, Kang Yi, Tong Zhao   +4 more
wiley   +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

Mullite production by valorization of a hydrodesulphurization catalyst waste

Journal of the American Ceramic Society, Volume 109, Issue 1, January 2026.
Due to its high alumina and silica content, Ni–Mo catalyst waste is a suitable, amorphous raw material for producing aluminosilicate phases. Thermal treatment of the waste at 1200°C for 30 min yields a material containing 50 wt.% mullite and exhibiting 96% overall crystallinity. The addition of amorphous silica significantly enhances mullite formation:
Rafael Carrizosa, Agenor De Noni Jr., Aurora López‐Delgado, Isabel Padilla, Maximina Romero   +4 more
wiley   +1 more source

Recognition method of transient falling images of coal and gangue separation in underground solid backfill mining with multimodal large language models

Meitan kexue jishu
Solid backfill coal mining, as a green mining method that balances resource recovery and ecological protection, relies on coal and gangue separation as a core process for the efficient operation of integrated underground mining, selection, and backfill ...
Yun ZHANG, Yixuan YANG, Xingping LAI, Liang TONG, Shenggen CAO, Yongzi LIU, Long ZHANG, Licheng BAI, Hao YE   +8 more
doaj   +1 more source

Research on separation mechanism of coal gangue photoelectric sorting recognition

Efficiently realizing the separation of coal gangue is a hot issue in coal preparation. To solve this problem, this paper proposes research on the identification and separation of minerals in coal gangue based on dual-energy X-rays, and conducts ...
Wang, Haoyu, Wang, Lingling, Zhu, Jinbo, Feng, Anan, Zhou, Wei, Li, Liansheng   +5 more
core   +1 more source

Coal body structure identification and development effect evaluation based on logging response

, 2021
According to the logging response characteristics of different coal structures, this paper quantitatively identified and described the coal structure in the research area, verified the results by drilling and coring.
LI Quanzhong, ZHAO Lingyun, HU Haiyang
core   +1 more source

Distribution Characteristics of Stress Sources and Surrounding Rock Structure Control Techniques of Gob‐Side Entry Driving in Extra‐Thick Coal Seam

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
To address the challenges of surrounding rock control caused by complex stress sources and intense ground pressure in gob‐side entry driving (GED) with narrow coal pillars under extra‐thick coal seams, this study takes the 10 m‐thick coal seam 8204 panel of Tashan Coal Mine as the engineering background.
Dongjie Jiang, Guangzhong Sun, Junjie Guo, Junwen Li, Xing Xu, Qi Ma, Arnab Biswas   +6 more
wiley   +1 more source

Influence of Pore Water on Energy Dissipation of Concrete and Its Quantitative Calculation Method

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Pore water is widely recognized as a critical factor that exerts a substantial impact on the mechanical strength of concrete materials. The present study centers on investigating the energy dissipation behavior of concrete under various conditions.
Xiaohong Chen, Pei Ge, Chengyi Ai, Wei Li, Yijun Wang, Junwen Zhou, Arnab Biswas   +6 more
wiley   +1 more source

Research on Mechanical Response Mechanisms of Interlayer Rock Strata in Closely Spaced Coal Seam Mining

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Closely spaced coal seams holds significant importance in global energy development, as the mechanical response mechanism of interlayer rock strata directly governs roadway deformation and stress concentration levels. This study investigates the impact of bearing structures within interlayer strata on the stability of surrounding rock during closely ...
Yuancheng Pei, Pucheng Rui, Fengyuan Lv, Wenyue Qi, Qiming Wei, Xiaolong Sun   +5 more
wiley   +1 more source