Seismological Activity During Room and Pillar Hard Coal Extraction at Great Depth

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F17%3A00475754" target="_blank" >RIV/68145535:_____/17:00475754 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S1877705817322956" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1877705817322956</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2017.05.155" target="_blank" >10.1016/j.proeng.2017.05.155</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Seismological Activity During Room and Pillar Hard Coal Extraction at Great Depth

Popis výsledku v původním jazyce

A first attempt of using the Room and Pillar mining method in the Czech Republic was implemented in the southern part of the Upper Silesian Coal Basin. This stratigraphical unit is well known for its complex geological structure with more than 40 main coal seams vertically distributed in the area of about 122 km2 of active mines and a complex slide/overlap fault system. The fact that the extraction of coal by this method is realised at a depth around 900 m below the surface has also made it one of the deepest Room and Pillar mining sites in the world. These facts brought lead to several questions. The main question connected to sustaining the safety of the workers before and after the advance of the mining works has resulted in this study of the prediction of unnatural seismological activity based on data that were collected during and after the excavation of the coal seam. Also, we ask whether the methods can be used for the prediction of inhomogeneous stress distributions in this kind of openings. Seismological monitoring, which is the main goal of this paper, was supplemented by stress and deformation measurements in coal pillars and surrounding rocks. More stations were added to the network of seismic stations of the coal mine at different levels surrounding the Room and Pillar site. We give the first results of the evaluation of seismic activity during the driving of the roadway in the first mining panel. We describe the site and mining conditions, details about seismological network, and a comparison of seismic activity with the gate driving advance and creation of coal pillars. This is compared to stress changes in the coal pillars.

Název v anglickém jazyce

Seismological Activity During Room and Pillar Hard Coal Extraction at Great Depth

Popis výsledku anglicky

A first attempt of using the Room and Pillar mining method in the Czech Republic was implemented in the southern part of the Upper Silesian Coal Basin. This stratigraphical unit is well known for its complex geological structure with more than 40 main coal seams vertically distributed in the area of about 122 km2 of active mines and a complex slide/overlap fault system. The fact that the extraction of coal by this method is realised at a depth around 900 m below the surface has also made it one of the deepest Room and Pillar mining sites in the world. These facts brought lead to several questions. The main question connected to sustaining the safety of the workers before and after the advance of the mining works has resulted in this study of the prediction of unnatural seismological activity based on data that were collected during and after the excavation of the coal seam. Also, we ask whether the methods can be used for the prediction of inhomogeneous stress distributions in this kind of openings. Seismological monitoring, which is the main goal of this paper, was supplemented by stress and deformation measurements in coal pillars and surrounding rocks. More stations were added to the network of seismic stations of the coal mine at different levels surrounding the Room and Pillar site. We give the first results of the evaluation of seismic activity during the driving of the roadway in the first mining panel. We describe the site and mining conditions, details about seismological network, and a comparison of seismic activity with the gate driving advance and creation of coal pillars. This is compared to stress changes in the coal pillars.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20703 - Mining and mineral processing

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

Procedia Engineering - ISRM European Rock Mechanics Symposium EUROCK 2017

ISBN

—

ISSN

1877-7058

e-ISSN

—

Počet stran výsledku

7

Strana od-do

67-73

Název nakladatele

Elsevier Ltd.

Místo vydání

Amsterdam

Místo konání akce

Ostrava

Datum konání akce

20. 6. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000416996000009