Parametric Studies of Total Load-Bearing Capacity of Steel Arch Supports

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F19%3A00523932" target="_blank" >RIV/68145535:_____/19:00523932 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27230/18:10243622 RIV/61989100:27120/18:10243622

Výsledek na webu

<a href="https://actamont.tuke.sk/pdf/2019/n3/4horyl.pdf" target="_blank" >https://actamont.tuke.sk/pdf/2019/n3/4horyl.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Parametric Studies of Total Load-Bearing Capacity of Steel Arch Supports

Popis výsledku v původním jazyce

The supports in roadways are dimensioned to the amount of the load applied during the roadway’s life. Roadways are exposed to the effect of rock pressure associated with the roadway drivage and with subsequent operations that extract coal, which significantly affect the original stability of rock mass. This induced secondary stress leads to the disturbance of sedimentary rocks, which are mostly of slight and medium strength, and to the significant deformations in roadways. The gate-roads are mainly supported with yielding steel arch support (THnprofiles). The load-bearing capacity of the steel arch supports is a key parameter in the design of roadways support. Determination of thisnparameter can be done using large testing frames in experimental laboratories. Another essentially cheaper way is to create a computer model which exhibits a good correlation with respect to the existing data from equivalent laboratory conditions. In this paper, we present the validated computer model of the steel arch supports through which the influences of important factors, namely different materials, number of the clamps in the yielding friction joints, and different values of tightening torque on the total load-bearing capacity, were determined. Thisnparametrical study was created based on the practical requirements from industry, and the obtained results will be reflected in the design ofnnew types of steel arch supports.

Název v anglickém jazyce

Parametric Studies of Total Load-Bearing Capacity of Steel Arch Supports

Popis výsledku anglicky

The supports in roadways are dimensioned to the amount of the load applied during the roadway’s life. Roadways are exposed to the effect of rock pressure associated with the roadway drivage and with subsequent operations that extract coal, which significantly affect the original stability of rock mass. This induced secondary stress leads to the disturbance of sedimentary rocks, which are mostly of slight and medium strength, and to the significant deformations in roadways. The gate-roads are mainly supported with yielding steel arch support (THnprofiles). The load-bearing capacity of the steel arch supports is a key parameter in the design of roadways support. Determination of thisnparameter can be done using large testing frames in experimental laboratories. Another essentially cheaper way is to create a computer model which exhibits a good correlation with respect to the existing data from equivalent laboratory conditions. In this paper, we present the validated computer model of the steel arch supports through which the influences of important factors, namely different materials, number of the clamps in the yielding friction joints, and different values of tightening torque on the total load-bearing capacity, were determined. Thisnparametrical study was created based on the practical requirements from industry, and the obtained results will be reflected in the design ofnnew types of steel arch supports.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Montanistica Slovaca

ISSN

1335-1788

e-ISSN

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Svazek periodika

24

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

10

Strana od-do

213-222

Kód UT WoS článku

000505598600004

EID výsledku v databázi Scopus

2-s2.0-85078795756