Ground surface uplift during hardcoal longwall mining

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F22%3A00556486" target="_blank" >RIV/68145535:_____/22:00556486 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S1365160922000673" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1365160922000673</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijrmms.2022.105099" target="_blank" >10.1016/j.ijrmms.2022.105099</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ground surface uplift during hardcoal longwall mining

Popis výsledku v původním jazyce

Ground surface uplift was detected during longwall mining in the Lazy Mine, a hard coal mine in the Czech part of the Upper Silesian Coal Basin, Czech Republic. The greatest uplift was 218 mm, based on surface point levelling by comparing surface points with heights of non-mined areas. This uplift occurred during subcritical mining at an average depth of 740 m below the surface. The mined coal seam is situated below the previously mined part of the multi-seam deposit. This study aims to provide a geomechanical explanation for ground surface uplift observed during longwall mining. The source of surface uplifts were deep inside the rock mass, therefore, enabling only the examination of geological, geomechanical, seismic, and technical mining data for uplift occurrence analysis. Therefore, the spatiotemporal evaluation of the observed vertical displacement and induced seismicity data was processed, and the observed ground surface was compared with empirical subsidence. Two time periods with surface uplifts during longwall mining were evaluated. Thick, competent rock layers, together with specific geomechanical conditions, were identified as the main characteristics responsible for the uplift.

Název v anglickém jazyce

Ground surface uplift during hardcoal longwall mining

Popis výsledku anglicky

Ground surface uplift was detected during longwall mining in the Lazy Mine, a hard coal mine in the Czech part of the Upper Silesian Coal Basin, Czech Republic. The greatest uplift was 218 mm, based on surface point levelling by comparing surface points with heights of non-mined areas. This uplift occurred during subcritical mining at an average depth of 740 m below the surface. The mined coal seam is situated below the previously mined part of the multi-seam deposit. This study aims to provide a geomechanical explanation for ground surface uplift observed during longwall mining. The source of surface uplifts were deep inside the rock mass, therefore, enabling only the examination of geological, geomechanical, seismic, and technical mining data for uplift occurrence analysis. Therefore, the spatiotemporal evaluation of the observed vertical displacement and induced seismicity data was processed, and the observed ground surface was compared with empirical subsidence. Two time periods with surface uplifts during longwall mining were evaluated. Thick, competent rock layers, together with specific geomechanical conditions, were identified as the main characteristics responsible for the uplift.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20703 - Mining and mineral processing

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

International Journal of Rock Mechanics and Mining Sciences

ISSN

1365-1609

e-ISSN

1873-4545

Svazek periodika

153

Číslo periodika v rámci svazku

May 2022

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

105099

Kód UT WoS článku

000793123700004

EID výsledku v databázi Scopus

2-s2.0-85127120595