Results 81 to 90 of about 609 (196)

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

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

Coal and coal gangue identification results of XGBoost.

, 2023
(a) Accuracy; (b) Loss.
Minghao Zhou (197358), Wenhao Lai (9357041)   +1 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

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

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

Characterization and Identification of Coal and Carbonaceous Shale Using Visible and Near-Infrared Reflectance Spectroscopy

, 2018
Because of the high organic carbon concentration in carbonaceous shale, a large proportion of carbonaceous shales are often misclassified into coals using visible and near-infrared (VIS-NIR) reflectance spectroscopy in the field of coal-gangue ...
Shirong Ge, Shibo Wang, En Yang
core   +1 more source

Overview of Solid Backfilling Technology Based on Coal-Waste Underground Separation in China

, 2019
China is the world’s largest coal producer country. However, large-scale coal mining has led to severe environmental pollution issues such as surface subsidence and gangue piling up.
Qiang Zhang, Jixiong Zhang, Zhongya Wu, Yang Chen   +3 more
core   +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
core   +1 more source