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Sergey Alexandrovich Sidorenko and Ilia Alexandrovich Panchenko
The National Mineral Resources University (Mining University) 2, 21 line, Saint-Petersburg, 199106, Russia
DOI : http://dx.doi.org/10.13005/bbra/1977
ABSTRACT: The main aim of the research was to study rational schemes of placing and fastening mine workings of the second layer in course of using a layerwise system of coal beds development. The prospects of developing thick flat coal beds in the Kuznetsk coal basin of the Russian Federation have been considered. It has been shown that in mining beds 7-10 m thick with the use of long wall minings, a layerwise development system with splitting the bed into two followed by processing the beds top-down has become widespread. The problem of the second layer mine opening stability has been considered. The possibility of using the finite element method for solving the problems of mining geomechanics has be substantiated, in particular, for studying the stress-strain state of the rock massif in the vicinity of the mine openings of coal mines. Mining-and-geomechanical models and calculation schemes have been presented for solving the task of determining the influence of the overworking (working of the first layer) on the status of zonal developing workings of the bottom beds. The results of study with the use of the finite element stress-strain state of rock massif have been shown. Diagrams of stress distribution in the area of bearing pressure ahead of the working have been presented. With regard to the stress state of the bottom bed, recommendations have been given about choosing the location of the workings. By results of computer simulation, conclusions have been made about the influence of various factors on stability of local workings of the second layer of the coal bed.
KEYWORDS: underground mining; coal beds; slicing system; mine openings; rock massif; stress-strain state
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| Copy the following to cite this article: Sidorenko S. A, Panchenko I. A. Substantiation of Parameters of the Technology of Mining Thick Flat Beds by Underground Method with Splitting the Bed Into two. Biosci Biotechnol Res Asia 2015;12(3) |
| Copy the following to cite this URL: Sidorenko S. A, Panchenko I. A. Substantiation of Parameters of the Technology of Mining Thick Flat Beds by Underground Method with Splitting the Bed Into two. Biosci Biotechnol Res Asia 2015;12(3). Biosci Biotechnol Res Asia 2015;12(3). Available from: https://www.biotech-asia.org/?p=4202 |
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