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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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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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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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.
europepmc +5 more sources
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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Research and application of key technology of intelligent coal caving in high gas fully-mechanized top coal caving face [PDF]
Meitan kexue jishu, 2023 At present, intelligent coal caving in high gas fully mechanized top coal caving face is facing many problems, mainly including poor recognition accuracy of coal gangue, incomplete control research on coal flow and gas concentration, cumbersome design ...
Yao CUI +3 more
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Theory and key technologies for intelligent fully-mechanized top-coal caving faces of annual production of millions of tons [PDF]
Meitan kexue jishuThe research focused on addressing various challenges in intelligent top caving theory, intelligent perception and recognition key technology, intelligent caving comprehensive decision-making technology, and remote caving intelligent control technology ...
Bin YU +7 more
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Research on active roof control space of fully mechanized caving support based on motion posture perception [PDF]
Meitan xuebaoThe 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 +5 more
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Stress distribution characteristics of overburden strata during thick coal seam top coal caving. [PDF]
Sci RepAbstract Given the lack of systematic research on the movement of overburden strata and damage characteristics of floor residual coal in the process of thick coal seam top coal caving, this study takes the Anping Coal Mine as the engineering background.
Ju L, Wang Z, Chen L, Wang Y, Cheng Z.
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EnergiesTo investigate the movement law of top coal and the influencing factors of coal caving ratio in fully mechanized top coal caving faces, this study adopts the theory of dispersoid mechanics. First, a top coal flow model was established without considering
Jinhu Zhang +6 more
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