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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20703 - Mining and mineral processing

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Article name in the collection

Procedia Engineering - ISRM European Rock Mechanics Symposium EUROCK 2017

ISBN

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ISSN

1877-7058

e-ISSN

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Number of pages

7

Pages from-to

67-73

Publisher name

Elsevier Ltd.

Place of publication

Amsterdam

Event location

Ostrava

Event date

Jun 20, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000416996000009