Impact of destress blasting on stress field development ahead of a hardcoal longwall face

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F14%3A00429479" target="_blank" >RIV/68145535:_____/14:00429479 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Impact of destress blasting on stress field development ahead of a hardcoal longwall face

Popis výsledku v původním jazyce

Stress concentration and rockburst risk in coal mine are associated with the occurrence of competent strata in overburdened coal seams. Benches of sandstone and conglomerate are difficult unbreakable and a high level of elastic energy is stored there. Itcan be released as a rockburst. Destress blasting is a rockburst protective measure in hardcoal longwall mining. For optimal use of this method it is useful to know the stress changes induced by blasting. This paper describes the results of a project?sin situ stress and its changes measurement ahead of an advancing longwall face in rock mass affected by destress blasting. The project was carried out in a longwall panel with a high rockburst risk. The newly developed modified overcoring method of stress testing was used. Although the explored longwall is still in progress the first results of stress development in the overburden of a mined seam influenced by blasting are interpreted.

Název v anglickém jazyce

Impact of destress blasting on stress field development ahead of a hardcoal longwall face

Popis výsledku anglicky

Stress concentration and rockburst risk in coal mine are associated with the occurrence of competent strata in overburdened coal seams. Benches of sandstone and conglomerate are difficult unbreakable and a high level of elastic energy is stored there. Itcan be released as a rockburst. Destress blasting is a rockburst protective measure in hardcoal longwall mining. For optimal use of this method it is useful to know the stress changes induced by blasting. This paper describes the results of a project?sin situ stress and its changes measurement ahead of an advancing longwall face in rock mass affected by destress blasting. The project was carried out in a longwall panel with a high rockburst risk. The newly developed modified overcoring method of stress testing was used. Although the explored longwall is still in progress the first results of stress development in the overburden of a mined seam influenced by blasting are interpreted.

Druh

D - Stať ve sborníku

CEP obor

DH - Báňský průmysl včetně těžby a zpracování uhlí

OECD FORD obor

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Projekt

<a href="/cs/project/VG20102014034" target="_blank" >VG20102014034: Bezpečnostní aspekty vedení báňských děl v hloubkách 800 m a větších</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

EUROCK 2014 - Rock Engineering and Rock Mechanics: Structures in and on Rock Masses

ISBN

978-1-315-74952-5

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

585-590

Název nakladatele

CRC Press, Taylor and Francis Group, Balkema

Místo vydání

London

Místo konání akce

Vigo

Datum konání akce

26. 5. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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