Numerical simulation of realistic top coal caving intervals under different top coal thicknesses in longwall top coal caving working face [PDF]
Scientific Reports, 2021 In the process of longwall top coal caving, the selection of the top coal caving interval along the advancing direction of the working face has an important effect on the top coal recovery.
Chuang Liu, Huamin Li
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A review of cavability evaluation in longwall top coal caving
International Journal of Mining Science and Technology, 2017 Longwall Top Coal Caving has been considered as one of the most effective technologies for the extraction of underground thick coal seams. A large number of studies on the applicability of Longwall Top Coal Caving into new mine sites have linked the ...
Tien Dung Le +3 more
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Numerical modelling of loose top coal and roof mass movement for a re-mined seam using the top coal caving method. [PDF]
PLoS ONE, 2023 The re-mined face using top coal caving system is the most applicable method for recovering the remaining reserves of a previous partially-mined thick coal seam.
Shuai Wang +3 more
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Application of BigML in the Classification Evaluation of Top Coal Caving [PDF]
Shock and Vibration, 2021 Longwall top coal caving mining is one of the main methods of mining thick coal seams in China. Therefore, carrying out the classification evaluation of top coal caving is of great significance to ensure mining success and reduce the risk of mining ...
Meng Wang +6 more
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Rule-based expert system to assess caving output ratio in top coal caving. [PDF]
PLoS One, 2020 Coal mining professionals in coal mining have recognized that the assessment of top coal release rate can not only improve the recovery rate of top coal, but also improve the quality of coal. But the process was often performed using a manual-based operation mode, which intensifies workload and difficulty, and is at risk of human errors.
Jiang H, Song Q, Gao K, Song Q, Zhao X.
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Top-coal initial caving law of continuous group caving method in extra-thick coal seams
矿业科学学报, 2023 In order to clarify the law of top coal caving with continuous group caving method in extra-thick coal seams, this study investigated the influences of the caving openings width on the morphological characteristics of caving body, the evolution law of ...
Wang Zuguang +3 more
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Development of 3D top coal caving angle model for fully mechanized extra-thick coal seam mining
International Journal of Mining Science and Technology, 2022 During high-intensity, fully mechanized mining of extra-thick coal seam, the top coal would cave to a certain 3D form. Based on the data collected during drilling, a 3D model of top coal caving surface space was established to determine the relationship ...
Hongfei Duan +4 more
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International Journal of Mining Science and Technology, 2020 The size distribution of the broken top coal blocks is an important factor, affecting the recovery ratio and the efficiency of drawing top coal in longwall top coal caving (LTCC) mining panel.
Jiachen Wang +4 more
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Technique of top coal caving with vibration
Procedia Earth and Planetary Science, 2009 AbstractHow to understand the top coal caving process and increase the top coal recovery ratio is one of the urgent problems to be resolved for the longwall top coal caving technology. The paper mainly studies a new theory and technique of top coal caving with vibration. The vibration device is mounted on the shield beam of the top coal caving support.
Xie, Yao-she, Zhao, Yang-sheng
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Influences of coal-rock interface morphology’s spatiotemporal evolutionary characteristics on top coal caving law [PDF]
Scientific ReportsThe work examined how the spatiotemporal evolution of the coal-rock interface morphology affected the top coal caving ratio. The geological conditions of the 3307 fully mechanized caving face at Tang’an Coal Mine served as the research context.
Yupeng Shen +5 more
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