Deformation analysis in the surroundings of the roadway ahead of longwall mining, Staszic-Wujek Mine, Poland

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F23%3A00569192" target="_blank" >RIV/68145535:_____/23:00569192 - isvavai.cz</a>

Výsledek na webu

<a href="https://ro.uow.edu.au/cgi/viewcontent.cgi?article=2521&context=coal" target="_blank" >https://ro.uow.edu.au/cgi/viewcontent.cgi?article=2521&context=coal</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Deformation analysis in the surroundings of the roadway ahead of longwall mining, Staszic-Wujek Mine, Poland

Popis výsledku v původním jazyce

Accurate knowledge of the stress-strain state in rock mass is absolutely critical to optimise support design. Therefore, the rock mass stresses are often measured for reasons of safety and efficiency in underground mining. Investigation of the rock mass stress is usually carried out by interpretation of the rock mass deformation processes. These can be monitored and measured. The compact conical-ended borehole overcoring (CCBO) probe was used to measure the pre-mining full stress tensor and afterwards three compact conical-ended borehole monitoring (CCBM) probes were installed to continuously monitor stress changes in rock mass ahead of the advancing longwall II/501/C mining seam 501 in the Staszic-Wujek coal mine in Poland. The purpose of the monitoring was to quantify changes in stress tensor during the mining process. At the monitoring site the extracted seam had an average thickness of 3.4 m at a depth of about 890 m and lies within the Polish part of the Upper Silesian Coal Basin. The maximum measured stress of 30 MPa was oriented close to horizontal and almost parallel to the monitored roadway. The deformation analysis of roadway was carried out using a pulse 3D laser scanner at the geotechnical station. Due to favourable orientation of the lateral stress, the deformation changes in the roadway surroundings the monitoring station were minimal.

Název v anglickém jazyce

Deformation analysis in the surroundings of the roadway ahead of longwall mining, Staszic-Wujek Mine, Poland

Popis výsledku anglicky

Accurate knowledge of the stress-strain state in rock mass is absolutely critical to optimise support design. Therefore, the rock mass stresses are often measured for reasons of safety and efficiency in underground mining. Investigation of the rock mass stress is usually carried out by interpretation of the rock mass deformation processes. These can be monitored and measured. The compact conical-ended borehole overcoring (CCBO) probe was used to measure the pre-mining full stress tensor and afterwards three compact conical-ended borehole monitoring (CCBM) probes were installed to continuously monitor stress changes in rock mass ahead of the advancing longwall II/501/C mining seam 501 in the Staszic-Wujek coal mine in Poland. The purpose of the monitoring was to quantify changes in stress tensor during the mining process. At the monitoring site the extracted seam had an average thickness of 3.4 m at a depth of about 890 m and lies within the Polish part of the Upper Silesian Coal Basin. The maximum measured stress of 30 MPa was oriented close to horizontal and almost parallel to the monitored roadway. The deformation analysis of roadway was carried out using a pulse 3D laser scanner at the geotechnical station. Due to favourable orientation of the lateral stress, the deformation changes in the roadway surroundings the monitoring station were minimal.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20101 - Civil engineering

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 2023 Resource Operators Conference

ISBN

978-1-74128-353-2

ISSN

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e-ISSN

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Počet stran výsledku

16

Strana od-do

36-51

Název nakladatele

University of Wollongong

Místo vydání

Wollongong

Místo konání akce

Wollongong

Datum konání akce

9. 2. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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