Study on the Influence of the Location of Dirt Band on Top Coal Caving Property in Extra-Thick Coal Seam
Sign Up to like & getrecommendations! Published in 2020 at "Geotechnical and Geological Engineering"
DOI: 10.1007/s10706-020-01430-2
Abstract: The influence of dirt band on the top coal caving property is usually analyzed from the thickness and hardness of the dirt band. For the extra-thick coal seam with a thickness of more than 20… read more here.
Keywords: top coal; dirt band; coal caving; coal ... See more keywords
Structure and deformation measurements of shallow overburden during top coal caving longwall mining
Sign Up to like & getrecommendations! Published in 2017 at "International journal of mining science and technology"
DOI: 10.1016/j.ijmst.2017.06.005
Abstract: Abstract Mining induced pressures are strong and overburden failure areas are large in top coal caving longwall mining, which constrains high production and safety mining. By employing the combination of the full view borehole photography… read more here.
Keywords: mining; top coal; caving longwall; longwall mining ... See more keywords
Application of improved and optimized fuzzy neural network in classification evaluation of top coal cavability
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-98630-4
Abstract: Longwall top coal caving technology is one of the main methods of thick coal seam mining in China, and the classification evaluation of top coal cavability in longwall top coal caving working face is of… read more here.
Keywords: neural network; top coal; evaluation; coal cavability ... See more keywords
Longwall Top Coal Caving Mechanisms in the Fractured Thick Coal Seam
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Geomechanics"
DOI: 10.1061/(asce)gm.1943-5622.0001722
Abstract: Abstract In this study, the finite difference method (FDM) coupled with a discrete fracture network (DFN) was utilized to analyze longwall top coal caving (LTCC) behaviors. The integrated FDM–DFN m... read more here.
Keywords: top coal; longwall top; coal caving; mechanisms fractured ... See more keywords
Boundary distribution of top-coal limit-equilibrium zone in fully mechanized caving in steeply dipping coal seams
Sign Up to like & getrecommendations! Published in 2021 at "Geomatics, Natural Hazards and Risk"
DOI: 10.1080/19475705.2021.1969450
Abstract: In fully mechanized caving mining, the earlier the top coal enters the limit-equilibrium zone, the easier it is for leakage to be induced in front of the support. As the dip angle of the seam… read more here.
Keywords: equilibrium zone; top coal; fully mechanized; coal ... See more keywords
Prediction of Top Coal Cavability Character of a Deep Coal Mine by Empirical and Numerical Methods
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Mining Science"
DOI: 10.1134/s1062739118054903
Abstract: Longwall top coal caving mining provides high productivity where thick coal seams exist. The study aims to predict the cavability character of the top coal for deep and thick coal seam in Soma lignite basin… read more here.
Keywords: coal; empirical numerical; top coal; cavability character ... See more keywords
Overburden movement characteristics of top-coal caving mining in multi-seam areas
Sign Up to like & getrecommendations! Published in 2018 at "Quarterly Journal of Engineering Geology and Hydrogeology"
DOI: 10.1144/qjegh2017-076
Abstract: The fully mechanized top-coal caving mining method was used to mine the 15 m thick No. 3–5 seam at a depth of 450 m in Tongxin mine, located in the Datong area, China. The seam was overlain… read more here.
Keywords: ground conditions; mining; movement; top coal ... See more keywords
Quantitative Evaluation of Top Coal Caving Methods at the Working Face of Extra-Thick Coal Seams Based on the Random Medium Theory
Sign Up to like & getrecommendations! Published in 2021 at "Advances in Civil Engineering"
DOI: 10.1155/2021/5528067
Abstract: Adopting an effective top coal caving method is the key to enhancing coal recovery and reducing gangue content for the fully mechanized top coal caving working face with extra-thick coal seams. In this study, the… read more here.
Keywords: caving methods; top coal; coal caving; coal ... See more keywords
Electromagnetic wave forward modeling of coal-gangue mixed model in top coal caving mining face
Sign Up to like & getrecommendations! Published in 2022 at "SIMULATION"
DOI: 10.1177/00375497221105290
Abstract: The automatic control of top coal caving is of great significance to realize intelligent coal mining. In the process of top coal caving, a coal-gangue mixed area containing coal, gangue, and air is formed at… read more here.
Keywords: gangue mixed; coal; top coal; electromagnetic wave ... See more keywords
Rule-based expert system to assess caving output ratio in top coal caving
Sign Up to like & getrecommendations! Published in 2020 at "PLoS ONE"
DOI: 10.1371/journal.pone.0238138
Abstract: 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… read more here.
Keywords: system; top coal; ratio top; output ratio ... See more keywords
Numerical modelling of loose top coal and roof mass movement for a re-mined seam using the top coal caving method
Sign Up to like & getrecommendations! Published in 2023 at "PLOS ONE"
DOI: 10.1371/journal.pone.0283883
Abstract: 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. However, this mining method may encounter the problems of low… read more here.
Keywords: mined face; coal caving; coal; top coal ... See more keywords