Results 81 to 90 of about 4,764 (197)

Accurate identification method of coal and gangue based on geometric feature constraints by DE-XRT

Meitan kexue jishu
The dual energy X-ray transmission identification of coal gangue still faces challenges in thickness, hardening, afterglow, and fan-shaped effects, among which the parameters for 5-150 mm wide thickness coal gangue separation fluctuate significantly and ...
Lei HE, Yongcun GUO, Ya ZHI, Shuang WANG, Deyong LI, Kun HU, Gang CHENG   +6 more
doaj   +1 more source

Research on light weight intelligent identification method of coal and gangue

Accurate identification of coal and gangue is essential for clean and efficient use of coal. Existing target detection algorithms are ineffective in detecting small-target and overlapping gangue, and contain complex network structure and large parameter ...
Yang, Yuhao, Guo, Yongcun, Wang, Wenshan, Li, Deyong, Wang, Shuang, Wang, Guofa   +5 more
core   +1 more source

Electromagnetic wave field response characteristics and precise identification methods of extra-thick top coal with intercalated gangue

Meitan xuebao
In the fully mechanized caving mining of extra-thick coal seams, grasping the variation law of top coal thickness with intercalated gangue in advance is crucial for accurate and efficient coal drawing at the working face.
Kesong FAN, Yaoyu ZHANG, Yuntao LIANG, Shaowei LIU, Deyin HE, Hongliang QIAN, Mingli DONG   +6 more
doaj   +1 more source

Multiple Identification System for Coal Miners Entering Well Based on Low Frequency Trigger

, 2020
The multiple identification system for coal miners entering well based on low-frequency trigger is proposed. By combining 2.4 GHz with 125 kHz, the data is transmitted at 2.4 GHz and the signal distance control is realized at 125 kHz.
WANG Wei, BAO Jianjun, ZHOU Shu, XU Shouquan
core   +1 more source

Biodesulphurisation of coal [PDF]

, 2001
The emission of sulphur oxides during the combustion of coal is one of the causes of an environmental problem known as acid rain. Biodesulphurisation technology applied as a method to remove sulphur before coal combustion was investigated in
Prayuenyong, Pakamas, Prayuenyong, P.
core  

Sound identification method of coal mine gas and coal dust explosion based on wavelet scattering transform [PDF]

To solve the problems of high false alarm rate and leakage rate of coal mine gas and coal dust explosion disaster alarm methods, and improve the accuracy of coal mine gas and coal dust explosion perception, sound identification method of coal mine gas ...
Xingchen YU, Xiaowei LI
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Study on emissivity measurement of different types of coal and gangue using the matching method

Gong-kuang zidonghua
The type, surface texture, metamorphic degree, and developmental stage of coal and gangue significantly influence their emissivity. Accurate settings for emissivity parameters are essential for infrared temperature measurements and the identification of ...
ZHANG Jinwang, HE Geng, HAN Xing, ZHANG Jiaming   +3 more
doaj   +1 more source

Method for Ground Penetrating Radar Identification of Intercalated Gangue Layers during Complex Structure Coal Seam Tunneling

During complex coal seam tunneling, the interlayer gangue impacts mining equipment cutting operations. Identifying interlayer gangue positions is crucial for guiding the advanced control of the cutting arm swing speed.
Zihao Wang, Qiang Zhang, Denggao Hu, Chunzhi Li, Ying Tian, Fuyan Lyu, Shuo Chen   +6 more
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Research on Coal and Gangue Recognition Based on the Improved YOLOv7-Tiny Target Detection Algorithm

The recognition technology of coal and gangue is one of the key technologies of intelligent mine construction. Aiming at the problems of the low accuracy of coal and gangue recognition models and the difficult recognition of small-target coal and gangue ...
Zhipeng Sun, Yiping Sui, Weixun Yi, Lei Zhang, Meng Wang   +4 more
core   +1 more source

Intelligent identification of coal fractures using an improved U-shaped network [PDF]

To address the challenges of coal fracture image recognition, including interference from gangue and multiscale fractures, a multiscale coal fracture segmentation network model to significantly enhance the recognition of coal fracture structures is ...
Zhang, Hongtu, Li, Lu, Li, Shengwei, Zhang, Fukai, Wang, Dengke, Xia, Yuling   +5 more
core   +1 more source