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
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
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
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