Mining Goes Digital – Mueller et al. (Eds)
© 2019 Taylor & Francis Group, London, ISBN 978-0-367-33604-2
473
The simulation of the excavation sites of coal mines
K.N. Kopylov
JSC SUEK, The Russia
S.S. Kubrin & D.I. Blokhin
Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences, Russia
ABSTRACT: In the conditions of high-performance working faces should be used methods
of operational management of the fully- mechanized, allowing organizing the maximum performance during the technological processes of breaking and transportation of coal, including taking into account the forecast of methane concentration within the bay. Based on the
actual data on the work of the mine “Polysaevskaya” was developed a simulation model of
the search’s optimal mode of control of the feed rate of the harvester. Because of the uneven
loading of the flight conveyer reduces the efficiency use of technological equipment. With
the help of mathematical modeling, the optimal feed modes of the combine found, which
provide an increase in the productivity. Based on the model of operational management can
be determined modes of operation of the complex, providing maximum performance.
1 INTRODUCTION
The main products of the coal mine provides the excavation site which is influenced by many
factors: mining and geological (conditions of occurrence of the coal seam, the properties of
coal and host rocks, etc.), mining (method of preparation, ventilation scheme, the applied
means of mechanization, the intensity of development of reserves of the excavation site). The
efficiency of the excavation site is determined by the operating time of the installed equipment for coal extraction and the degree of use of the installed capacity, which depends mainly
on the feed rate of the combine. It based on its value that the design load on the treatment
face planned. There are various methods of determining the average maximum permissible
load on the working face in methane mines (Ruban et al. 2009). They allow quite accurately
determine the load in different mining and geological conditions, taking into account the
technological schemes of mining coal reserves and ventilation schemes. Unfortunately, these
methods cannot applied in the operational management of the mechanized complex, because
they differ in the complexity of calculations, the presence of many factors, including empirical ones, which have different values along the length of the working face.
The most promising approach is to determine the parameters of the mechanized complex based on the use of mathematical modeling of technological processes (Samarskij &
Mihajlov 2001). The excavation site as a whole is a complex system, which influenced by the
coal seam and host rocks, the applied means of mechanization, the state of the mine atmosphere and the intensity of methane emission. In recent years, several developed mathematical
models describing the work of the excavation site have presented in scientific publications.
In (Tkachev & Bublikov 2015) substantiated the algorithm of automatic control of the feed
speeds and cutting from the standpoint of stabilization of the loading and performance of
the Executive bodies. Of interest is: the mathematical description of the forecast of methane release from the surface of the coal seam exposure taking into account the high rate of
advance of the preparatory face (Kachurin et al. 2011); the methodology of the forecast of
the maximum permissible load on the treatment face by the gas factor (Slastunov et al. 2015),
based on the solution of differential equations in partial derivatives of methane mass transfer;
© 2019 Taylor & Francis Group, London, ISBN 978-0-367-33604-2
473
The simulation of the excavation sites of coal mines
K.N. Kopylov
JSC SUEK, The Russia
S.S. Kubrin & D.I. Blokhin
Institute of Comprehensive Exploitation of Mineral Resources Russian Academy of Sciences, Russia
ABSTRACT: In the conditions of high-performance working faces should be used methods
of operational management of the fully- mechanized, allowing organizing the maximum performance during the technological processes of breaking and transportation of coal, including taking into account the forecast of methane concentration within the bay. Based on the
actual data on the work of the mine “Polysaevskaya” was developed a simulation model of
the search’s optimal mode of control of the feed rate of the harvester. Because of the uneven
loading of the flight conveyer reduces the efficiency use of technological equipment. With
the help of mathematical modeling, the optimal feed modes of the combine found, which
provide an increase in the productivity. Based on the model of operational management can
be determined modes of operation of the complex, providing maximum performance.
1 INTRODUCTION
The main products of the coal mine provides the excavation site which is influenced by many
factors: mining and geological (conditions of occurrence of the coal seam, the properties of
coal and host rocks, etc.), mining (method of preparation, ventilation scheme, the applied
means of mechanization, the intensity of development of reserves of the excavation site). The
efficiency of the excavation site is determined by the operating time of the installed equipment for coal extraction and the degree of use of the installed capacity, which depends mainly
on the feed rate of the combine. It based on its value that the design load on the treatment
face planned. There are various methods of determining the average maximum permissible
load on the working face in methane mines (Ruban et al. 2009). They allow quite accurately
determine the load in different mining and geological conditions, taking into account the
technological schemes of mining coal reserves and ventilation schemes. Unfortunately, these
methods cannot applied in the operational management of the mechanized complex, because
they differ in the complexity of calculations, the presence of many factors, including empirical ones, which have different values along the length of the working face.
The most promising approach is to determine the parameters of the mechanized complex based on the use of mathematical modeling of technological processes (Samarskij &
Mihajlov 2001). The excavation site as a whole is a complex system, which influenced by the
coal seam and host rocks, the applied means of mechanization, the state of the mine atmosphere and the intensity of methane emission. In recent years, several developed mathematical
models describing the work of the excavation site have presented in scientific publications.
In (Tkachev & Bublikov 2015) substantiated the algorithm of automatic control of the feed
speeds and cutting from the standpoint of stabilization of the loading and performance of
the Executive bodies. Of interest is: the mathematical description of the forecast of methane release from the surface of the coal seam exposure taking into account the high rate of
advance of the preparatory face (Kachurin et al. 2011); the methodology of the forecast of
the maximum permissible load on the treatment face by the gas factor (Slastunov et al. 2015),
based on the solution of differential equations in partial derivatives of methane mass transfer;