Substantiation of Parameters of Longwall Top Coal Caving Technology
A. N. Starodubov1,2
1Federal Research Center for Coal and Coal Chemistry, Siberian Branch, Russian Academy of Sciences, Kemerovo, Russia
2Gorbachev Kuzbass State Technical University, Kemerovo, Russia
Keywords: Longwall top coal caving, discrete element method, powered roof support, undermring mining, dilution, numerical modeling, effective parameters
Abstract
The article sets forth the studies on the longwall top coal caving technology with the powered roof support under development using the discrete element method in RockyDEM. The computer-assisted modeling with regard to geological and geotechnical conditions determines the LTCC technology parameters. They ensure the most efficient performance of the technology in terms of the integrated combination of caved coal mass, coal dilution, coal loss behind the support and frequency of poor roof caving events.
|
