On the quantitative determination of coal seam thickness by means of in-seam seismic surveys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F15%3A00447887" target="_blank" >RIV/68145535:_____/15:00447887 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.nrcresearchpress.com/doi/full/10.1139/cgj-2014-0466#.VgqE1Zc70mt" target="_blank" >http://www.nrcresearchpress.com/doi/full/10.1139/cgj-2014-0466#.VgqE1Zc70mt</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1139/cgj-2014-0466" target="_blank" >10.1139/cgj-2014-0466</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the quantitative determination of coal seam thickness by means of in-seam seismic surveys

Popis výsledku v původním jazyce

By means of in-seam seismic (ISS) surveys carried out at Karvina coal mine of OKD, Czech Republic, in two neighbouring panels it is shown how the distribution of coal seam thickness can be investigated if the coal seam consists of almost pure coal. The coal seam under investigation was considerably affected by erosion, which resulted in thickness changes amounting from 30 cm up to 4.40 m. First, by applying ISS-tomographic inversion to the group travel times for a constant frequency value, the distribution of the related group velocity was determined, which showed the extension of the erosions within the survey areas. By correlating the group velocity distribution with known values of the coal seam thickness along a gate, a relation in terms of a polynomial approxi- mation between these quantities could be derived. This relation is specific for a chosen frequency value and resolves in general only some of the thickness range. For the application presented in this paper, a value of 200

Název v anglickém jazyce

On the quantitative determination of coal seam thickness by means of in-seam seismic surveys

Popis výsledku anglicky

By means of in-seam seismic (ISS) surveys carried out at Karvina coal mine of OKD, Czech Republic, in two neighbouring panels it is shown how the distribution of coal seam thickness can be investigated if the coal seam consists of almost pure coal. The coal seam under investigation was considerably affected by erosion, which resulted in thickness changes amounting from 30 cm up to 4.40 m. First, by applying ISS-tomographic inversion to the group travel times for a constant frequency value, the distribution of the related group velocity was determined, which showed the extension of the erosions within the survey areas. By correlating the group velocity distribution with known values of the coal seam thickness along a gate, a relation in terms of a polynomial approxi- mation between these quantities could be derived. This relation is specific for a chosen frequency value and resolves in general only some of the thickness range. For the application presented in this paper, a value of 200

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DH - Báňský průmysl včetně těžby a zpracování uhlí

OECD FORD obor

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Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Canadian Geotechnical Journal

ISSN

0008-3674

e-ISSN

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Svazek periodika

52

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

CA - Kanada

Počet stran výsledku

9

Strana od-do

1496-1504

Kód UT WoS článku

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EID výsledku v databázi Scopus

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