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Statements

Subject Item
n2:RIV%2F68145535%3A_____%2F05%3A00026840%21RIV06-AV0-68145535
rdf:type
n4:Vysledek skos:Concept
dcterms:description
Coal production in Ostrava-Karviná Hard Coal Basin is connected with occurence of rock bursts. During seventies and eighties of the preceding century the biggest annual coal outputs were achieved (about 24 million t/a). It was expected, that the wind-up of coal mining, which occured during nineties and during which coal production was gradually reduced up to annual output of about 14 million t/a, would be manifested by a reduction of underground rock burst risk and thus by diminishing of frequency of rock burst events. However, practical results have demostrated that the risk of rock bursts is continuously very actual and that the natural and mining technical conditions of coalfield participate in a decisive manner in this problem. Coal production in Ostrava-Karviná Hard Coal Basin is connected with occurence of rock bursts. During seventies and eighties of the preceding century the biggest annual coal outputs were achieved (about 24 million t/a). It was expected, that the wind-up of coal mining, which occured during nineties and during which coal production was gradually reduced up to annual output of about 14 million t/a, would be manifested by a reduction of underground rock burst risk and thus by diminishing of frequency of rock burst events. However, practical results have demostrated that the risk of rock bursts is continuously very actual and that the natural and mining technical conditions of coalfield participate in a decisive manner in this problem. Dobývání uhlí v Ostravsko-karvinském revíru je spojeno s nebezpečím vzniku důlních otřesů. V 70.-tých a 80.-tých letech minulého století se dosahovalo nejvyšších těžeb v revíru (kolem 24 milionů tun). Očekávalo se, že se útlum těžby, ke kterému došlo v devadesátých letech, kdy byla těžba postupně snížena na cca 14 milionů tun, příznivě projeví snížením rizika důlních otřesů a tedy i zmenšením jejich výskytu. Praktické výsledky však ukázaly, že riziko důlních otřesů je stále velmi aktuální, a že rozhodující podíl na něm mají složité přírodní a důlně technické poměry v revíru.
dcterms:title
Rock bursts during reduction of coal production in Ostrava-Karvina coalfield Rock bursts during reduction of coal production in Ostrava-Karvina coalfield Důlní otřesy v období útlumu těžby v Ostravsko-karvinském revíru
skos:prefLabel
Rock bursts during reduction of coal production in Ostrava-Karvina coalfield Rock bursts during reduction of coal production in Ostrava-Karvina coalfield Důlní otřesy v období útlumu těžby v Ostravsko-karvinském revíru
skos:notation
RIV/68145535:_____/05:00026840!RIV06-AV0-68145535
n5:strany
261;264
n5:aktivita
n10:P n10:Z
n5:aktivity
P(AACBU22-03), P(AACBU30-03), Z(AV0Z30860518)
n5:dodaniDat
n13:2006
n5:domaciTvurceVysledku
n20:8520070
n5:druhVysledku
n17:D
n5:duvernostUdaju
n21:S
n5:entitaPredkladatele
n8:predkladatel
n5:idSjednocenehoVysledku
541323
n5:idVysledku
RIV/68145535:_____/05:00026840
n5:jazykVysledku
n15:eng
n5:klicovaSlova
rock bursts; reduction of coal production
n5:klicoveSlovo
n9:rock%20bursts n9:reduction%20of%20coal%20production
n5:kontrolniKodProRIV
[0B7E22BBF755]
n5:mistoKonaniAkce
Brno
n5:mistoVydani
Leiden
n5:nazevZdroje
Eurock 2005. Impact of Human Activity on the Geological Environment. Proceedings
n5:obor
n11:DH
n5:pocetDomacichTvurcuVysledku
1
n5:pocetTvurcuVysledku
1
n5:projekt
n14:AACBU30-03 n14:AACBU22-03
n5:rokUplatneniVysledku
n13:2005
n5:tvurceVysledku
Konečný, Petr
n5:typAkce
n6:WRD
n5:zahajeniAkce
2005-05-18+02:00
n5:zamer
n16:AV0Z30860518
s:numberOfPages
4
n19:hasPublisher
A.A.Balkema Publishers
n18:isbn
04-1538-042-1