Large scale destress blasting in roof rocks for rockburst control

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F18%3A00497129" target="_blank" >RIV/68145535:_____/18:00497129 - 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

Large scale destress blasting in roof rocks for rockburst control

Popis výsledku v původním jazyce

The importance of using the destress blasting as an active rockburst mitigation measure has in-creased within the frame of present increase and development in mining depth and high horizontal stresses. The main goals of the destress blasting are softening of competent rock layers, reduction of strain energy stor-age and rock mass stress release, which together contribute to minimizing rockburst occurrence and risk. Case study of the destress blasting from Czech hardcoal mining in unfavorable geomechanical conditions is presented and evaluated in terms of rockburst prevention. Destress blasting stages were carried out in a group of boreholes (3–7) with the total explosive charge ranging from 1275 kg to 3075 kg, detonated regularly at a distance of 28 m to 52 m ahead of the advancing longwall face. Evaluation of destress blasting based on seismic monitoring revealed that the longwall blastings were very successful in terms of rock mass stress release and decrease the rockburst risk.

Název v anglickém jazyce

Large scale destress blasting in roof rocks for rockburst control

Popis výsledku anglicky

The importance of using the destress blasting as an active rockburst mitigation measure has in-creased within the frame of present increase and development in mining depth and high horizontal stresses. The main goals of the destress blasting are softening of competent rock layers, reduction of strain energy stor-age and rock mass stress release, which together contribute to minimizing rockburst occurrence and risk. Case study of the destress blasting from Czech hardcoal mining in unfavorable geomechanical conditions is presented and evaluated in terms of rockburst prevention. Destress blasting stages were carried out in a group of boreholes (3–7) with the total explosive charge ranging from 1275 kg to 3075 kg, detonated regularly at a distance of 28 m to 52 m ahead of the advancing longwall face. Evaluation of destress blasting based on seismic monitoring revealed that the longwall blastings were very successful in terms of rock mass stress release and decrease the rockburst risk.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20703 - Mining and mineral processing

Projekt

<a href="/cs/project/LO1406" target="_blank" >LO1406: Institut čistých technologií těžby a užití energetických surovin - Projekt udržitelnosti</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

Rock Dynamics - Experiments, Theories and Applications

ISBN

978-0-8153-9667-3

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

291-297

Název nakladatele

Taylor and Francis Group

Místo vydání

London

Místo konání akce

Trondheim

Datum konání akce

26. 6. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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