Analysis of Coal Outlet Parameters by Simulation Modeling of Longwall Top Coal Caving

The new design of a powered roof support for the controlled longwall top coal caving in thick coal seams contains a special outlet and a reciprocating feeder. The introduction of such technology needs pre-testing and analysis of the outlet modes per the support units, such that to ensure the maximum...

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Bibliographic Details
Published inJournal of mining science Vol. 59; no. 4; pp. 565 - 571
Main Authors Klishin, V. I., Starodubov, A. N., Kramarenko, V. A., Kadochigova, A. N., Kaplun, A. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.08.2023
Springer Nature B.V
Subjects
Average velocity
Coal
Conveyors
Design
Design parameters
Discrete element method
Earth and Environmental Science
Earth Sciences
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Mineral Mining Technology
Mineral Resources
Parameters
Simulation models
Vibration
thick coal seams
feeder
outlet modes
underground mining
simulation model
scraper conveyor
powered roof support
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Summary:The new design of a powered roof support for the controlled longwall top coal caving in thick coal seams contains a special outlet and a reciprocating feeder. The introduction of such technology needs pre-testing and analysis of the outlet modes per the support units, such that to ensure the maximum allowable fill of the longwall conveyor without its overloading and dynamic phenomena. Created in Rocky DEM environment with that end in view, the simulation model takes into account the physical effect of rock mass fracture using the discrete element method, and enables variation in the design parameters and operating conditions of the powered roof support. The implemented experiments make it possible to assess the interdependence of the average velocity of coal outlet to the conveyor, the outlet gate angle and the feeder vibration frequency.
ISSN:1062-7391
1573-8736
DOI:10.1134/S1062739123040051