Results 11 to 20 of about 2,129 (172)

Prediction of rock mixed ratio in image-based intelligent control of drawing opening in longwall top coal caving face – Part I: Surface rock mixed ratio of coal flow [PDF]

Meitan xuebao
Image-based intelligent control of longwall top coal caving (LTCC) is a critical technology for achieving intelligent coal mining. Its core lies in monitoring the rock mixed ratio (RMR) of coal flow to control the drawing opening.
Jiachen WANG, Shengli YANG, Lianghui LI, Bochao AN, Shixiong SONG, Yubing WANG   +5 more
doaj   +4 more sources

Key technologies for intelligent, efficient, and safe mining of impact thick coal seams due to hard roof [PDF]

Meitan xuebao
To address the challenges of source-based rock burst elimination and efficient mining in ultra-thick coal seams prone to rock bursts due to hard roofs, a safety assurance technology was developed to create a favorable environment for intelligent and ...
Bin YU, Xiangbin MENG, Yang TAI, Ziyu SHANG, Mingxian PENG, Tiejun KUANG, Feilong GUO, Dongyin LI, Shibo WANG   +8 more
doaj   +3 more sources

Dynamic Random Arching in the Flow Field of Top-Coal Caving Mining

Energies, 2018
The large mining height fully mechanized top-coal caving mining technique has developed rapidly and become the most extensively used mining method for ultra-thick coal seams. The arching of coal/gangue and the drawing out of gangue are peculiar phenomena
Ningbo Zhang, Changyou Liu, Xiaojie Wu, Tingxiang Ren   +3 more
doaj   +3 more sources

Comprehensive prevention and control strategy for top coal fire based on the intelligent mine comprehensive management and control platform [PDF]

Meikuang Anquan
To improve the intelligence and efficiency of mine fire prevention and control, a comprehensive prevention and control strategy for caving coal mining fires based on the intelligent mine integrated management and control platform is proposed.
Miao ZHAO
doaj   +3 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   +3 more sources

Key technologies and demonstration of unmanned steeply inclined short-wall fully mechanized top-coal caving intelligent mining [PDF]

Meitan kexue jishu
Since the 14th Five-Year Plan, my China’s coal mine digital intelligence technology has developed rapidly, especially in thin coal seam mining. However, the unmanned intelligent mining technology of steeply inclined short-wall fully mechanized caving is ...
Haodang LI, Qing LIU, Bin GU, Yupeng YAO, Yanyi SUN, Xin TIAN, Wu XIONG, Kunlun LIU, Xinping BAO, Junfei WU, Ruibing YAN   +10 more
doaj   +3 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

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 ...
Zhenguo Yan, Huachuan Wang, Huicong Xu, Jingdao Fan, Weixi Ding   +4 more
openaire   +4 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