Elena Pivarčiová, Kseniia Domnina, Zuzana Ságová
Design of the construction and research of vibrations and heat transfer of mine workings
Číslo: 1/2019
Periodikum: Acta Montanistica Slovaca
Klíčová slova: vibration, heat transfer, mine workings, concrete lining.
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Anotace:
The creation of safe conditions for the operation of underground facilities is one of the main tasks of ensuring the stability of mine
workings. Today, in conditions of great depths and external dynamic loads, it is necessary to ensure not only the strength of the linings but
also their resistance to seismic, vibration, and thermal effects. The solution of this problem is the usage of multi-layer combined linings,
which expand the possibility of using various materials for fastening openings in difficult mining and geological conditions.
This paper presents a study to determine the usage of concrete for standing support of walls and roof in a mine. It deals with the
research of vibrations and heat transfer of mine workings. The construction of a three-layer vibration-resistant rigid-pliable lining for mine
workings has been developed. Its pliable outer layer is made of foam concrete reinforced by PET fiber, the inner layer is the sprayed
concrete layer with PET-fiber reinforcing, and the middle layer is a closed concrete ring of the rigid lining.
In the article, the mathematical model of impact-wave deformation of the lining ring from external seismic and impulse loads is
formalized. The course of temperature fields above the heated sample is also studied.
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workings. Today, in conditions of great depths and external dynamic loads, it is necessary to ensure not only the strength of the linings but
also their resistance to seismic, vibration, and thermal effects. The solution of this problem is the usage of multi-layer combined linings,
which expand the possibility of using various materials for fastening openings in difficult mining and geological conditions.
This paper presents a study to determine the usage of concrete for standing support of walls and roof in a mine. It deals with the
research of vibrations and heat transfer of mine workings. The construction of a three-layer vibration-resistant rigid-pliable lining for mine
workings has been developed. Its pliable outer layer is made of foam concrete reinforced by PET fiber, the inner layer is the sprayed
concrete layer with PET-fiber reinforcing, and the middle layer is a closed concrete ring of the rigid lining.
In the article, the mathematical model of impact-wave deformation of the lining ring from external seismic and impulse loads is
formalized. The course of temperature fields above the heated sample is also studied.