Large scale destress blasting in roof rocks for rockburst control

Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Large scale destress blasting in roof rocks for rockburst control
Original language description
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.
Czech name
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Czech description
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Project
<a href="/en/project/LO1406" target="_blank" >LO1406: Institute of clean technologies for mining and utilization of raw materials for energy use -Sustainability program</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Rock Dynamics - Experiments, Theories and Applications
ISBN
978-0-8153-9667-3
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
291-297
Publisher name
Taylor and Francis Group
Place of publication
London
Event location
Trondheim
Event date
Jun 26, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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