Rockbursts provoked by destress blasting in hard coal longwall mining

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F13%3A00384832" target="_blank" >RIV/68145535:_____/13:00384832 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.crcnetbase.com/doi/abs/10.1201/b13759-25" target="_blank" >http://www.crcnetbase.com/doi/abs/10.1201/b13759-25</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1201/b13759-25" target="_blank" >10.1201/b13759-25</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rockbursts provoked by destress blasting in hard coal longwall mining

Popis výsledku v původním jazyce

Destress blasting is a very important proactive measure in areas of rockburst hazard in many mining regions. However, among the hard coal mining industry in particular, it is still not a popular choice. Destress blasting is used as a standard proactive technique in areas of high rockburst risk in longwall mining in the Czech part of the Upper Silesian Coal Basin (UCSB). Destress blasting is carried out in rigid competent rocks adjacent to coal seams at depths of 700 to 1000 m below the surface. Groups of boreholes (from 2 to 10) are fired with explosive charges of 500 to 4500 kg during longwall mining of thick coal seams (thickness from 4 to 6 m) ahead of the longwall face. The main goals of destress blasting are the softening of the competent rock layers for better caving, reduction of strain energy storage and rock mass stress release. Induced rockburst can be provoked in favourable conditions and such cases from locations in the USCB are described in the paper.

Název v anglickém jazyce

Rockbursts provoked by destress blasting in hard coal longwall mining

Popis výsledku anglicky

Destress blasting is a very important proactive measure in areas of rockburst hazard in many mining regions. However, among the hard coal mining industry in particular, it is still not a popular choice. Destress blasting is used as a standard proactive technique in areas of high rockburst risk in longwall mining in the Czech part of the Upper Silesian Coal Basin (UCSB). Destress blasting is carried out in rigid competent rocks adjacent to coal seams at depths of 700 to 1000 m below the surface. Groups of boreholes (from 2 to 10) are fired with explosive charges of 500 to 4500 kg during longwall mining of thick coal seams (thickness from 4 to 6 m) ahead of the longwall face. The main goals of destress blasting are the softening of the competent rock layers for better caving, reduction of strain energy storage and rock mass stress release. Induced rockburst can be provoked in favourable conditions and such cases from locations in the USCB are described in the paper.

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

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

Rock Fragmentation by Blasting

ISBN

978-0-415-62143-4

ISSN

—

e-ISSN

—

Počet stran výsledku

10

Strana od-do

193-202

Název nakladatele

CRC Press Taylor and Francis Group, Balkema

Místo vydání

London

Místo konání akce

New Dehli

Datum konání akce

26. 11. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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