Results 21 to 30 of about 310 (146)

Performance Analysis of Coal Gangue Recognition Based on Hierarchical Filtering and Coupled Wrapper Feature Selection Method

IEEE Access, 2023
Coal gangue recognition of top coal caving is one of the important links in the process of intelligent coal mine construction. However, the recognition accuracy of this technology in practical application is still challenging, because the recognition ...
He Li, Yao Zhang, Yang Yang, Qingliang Zeng   +3 more
doaj   +2 more sources

Construction and Application of an Intelligent Prediction Model for the Coal Pillar Width of a Fully Mechanized Caving Face Based on the Fusion of Multiple Physical Parameters [PDF]

Sustainability
The scientific and reasonable width of coal pillars is of great significance to ensure safe and sustainable mining in the western mining area of China. To achieve a precise analysis of the reasonable width of coal pillars in fully mechanized caving face sections of gently inclined coal seams in western China, this paper analyzes and studies various ...
Yan, Zhenguo, Wang, Huachuan, Xu, Huicong, Fan, Jingdao, Ding, Weixi   +4 more
core   +5 more sources

Intelligence technology of inverted air current in fully-mechanized workface

Meikuang Anquan, 2022
With the development of intelligent technology and equipment in coal mine, it gets a lot of results in the intelligent ventilation system. However, there are many deficiencies in the catastrophic ventilation system. However, there are few studies on the
ZHANG Jianwei, WANG Yang, MA Ruifeng
doaj   +2 more sources

A research study of lightweight state perception algorithm based on improved YOLOv5s‐Tiny for fully mechanized top‐coal caving mining

Energy Science & Engineering
Real‐time monitoring of the coal caving process in fully mechanized mining is crucial for achieving intelligent and efficient top‐coal caving. While the coal gangue identification method, employing vision and deep learning, has advanced in the realm of ...
PengFei Shan, Tong Yang, XiaoChen Wu, HaoQiang Sun   +3 more
doaj   +2 more sources

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

Meitan 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, Xiaowan LEI, Zhaosheng MENG, Lirong WAN, Xinliang BAN, Yulong HU   +5 more
doaj   +2 more sources

Key grouting technology and engineering demonstration for green mines

矿业科学学报, 2023
This study proposed the multi-coupling grouting system with the aim to tackle green mine problems such as surface collapse, water resources destruction and coal based solid waste accumulation.Successfully applied, this system yielded the following major ...
Du Jinlong, Pan Shuren, Liu Changyou, Wei Yunxun, Lu Yan, Pan Haiyang, Qi Kuan, Zhao Ming, Liu Housong, Yao Hongxin, Zhou Yao, Yan Jia, Li Shinian, Zhang Biao, Zhang Sinuo   +14 more
doaj   +2 more sources

Failure analysis and prediction of roof instability in end face under repeated mining using early warning system

Scientific Reports, 2023
The overlying strata of the lower coal seam is easy to be collapsed causing the roof caving accident at the end face of the mining working face under repeated mining in close-distance coal seams.
Fei Li, Dezhong Kong, Qiang Li, Yuqi Shang, Zhanbo Cheng, Liuquan He   +5 more
doaj   +2 more sources

Precise detection of coal and gangue based on natural γ-ray [PDF]

Scientific Reports
To address the technical limitations of automatic coal and gangue detection technology in fully mechanized top coal caving mining operations, the low radiation level radioactivity measurement method is utilized to assess the degree of coal-gangue mixture
Ningbo Zhang, Changyou Liu, Chuanqi Zhu, Baobao Chen, Zhongbin Wang, Xiaojie Wu   +5 more
doaj   +2 more sources

Coal-gangue sound recognition using hybrid multi-branch CNN based on attention mechanism fusion in noisy environments [PDF]

Scientific Reports
The coal-gangue recognition technology plays an important role in the intelligent realization of fully mechanized caving face and the improvement of coal quality. Although great progress has been made for the coal-gangue recognition in recent years, most
Qingjun Song, Wenchao Hao, Qinghui Song, Haiyan Jiang, Kai Li, Shirong Sun   +5 more
doaj   +2 more sources

Research and application of remote intelligent fluid supply and power supply technology in coal mine super-long strike fully mechanized caving face

Meitan kexue jishu
In the working conditions of long-strike coal mine faces, the traditional approach for liquid supply and power supply equipment is mobile withdrawal to follow the mining progress. However, this production method has several drawbacks. It involves a large
Chuanming ZHANG, Qingkai ZANG, Yongming NIU, Hui GUO, Ran LI, Dongyue ZHANG   +5 more
doaj   +2 more sources