Počet záznamů: 1  

Application of Seismic Parameters for Estimation of Destress Blasting Effectiveness

  1. 1.
    SYSNO ASEP0475722
    Druh ASEPC - Konferenční příspěvek (mezinárodní konf.)
    Zařazení RIVD - Článek ve sborníku
    NázevApplication of Seismic Parameters for Estimation of Destress Blasting Effectiveness
    Tvůrce(i) Wojtecki, Ł. (PL)
    Mendecki, M. (PL)
    Koníček, Petr (UGN-S) RID, ORCID
    Zuberek, W. M. (PL)
    Celkový počet autorů4
    Zdroj.dok.Procedia Engineering - ISRM European Rock Mechanics Symposium EUROCK 2017. - Amsterdam : Elsevier Ltd., 2017 / Koníček P. ; Souček K. ; Konečný P. - ISSN 1877-7058
    Rozsah strans. 750-760
    Poč.str.11 s.
    Forma vydáníOnline - E
    AkceISRM European Rock Mechanics Symposium EUROCK 2017
    Datum konání20.06.2017 - 23.06.2017
    Místo konáníOstrava
    ZeměCZ - Česká republika
    Typ akceWRD
    Jazyk dok.eng - angličtina
    Země vyd.NL - Nizozemsko
    Klíč. slovaactive rockburst prevention ; long-hole destress blasting ; seismic effect ; seismic source parameters
    Vědní obor RIVDH - Báňský průmysl vč. těžby a zpracování uhlí
    Obor OECDMining and mineral processing
    Institucionální podporaUGN-S - RVO:68145535
    UT WOS000416996000096
    DOI10.1016/j.proeng.2017.05.241
    AnotaceCoal seams in the Upper Silesian Coal Basin are currently extracted under more and more disadvantageous geological and mining conditions. Mining depth, geological dislocations and mining remnants are factors which affect the rockburst hazard during underground mining to the greatest extent. This hazard can be minimized by employment of active rockburst prevention, where long-hole destress blasts in roof rocks (torpedo blasts) have an important role. The main goal of these blastings is to either destress local stress concentrations in rock mass and to fracture the thick layers of strong roof rocks to prevent or minimize the impact of high energy tremors on the excavations. Sometimes, these blastings are performed to make the roof rocks caving behind the longwall face easier. The efficiency of blasting is typically evaluated from the seismic effect, which is calculated based on seismic monitoring data (seismic energy) and the weight of the charged explosive. This method, as used previously in the Czech Republic, was adopted in a selected Polish hard coal mine in the Upper Silesian Coal Basin. This method enables rapid and easy estimation of destress blasting effectiveness, adjusted to conditions occurring in the designed colliery. Destress blasts effectiveness may be evaluated via the seismic source parameters analysis as well, as was carried out in the selected colliery in the Polish part of the Upper Silesian Coal Basin. These parameters provide information, for example, on its size, state of stress and occurrence of slip mechanism in the source of provoked tremors. Long-hole destress blasting effectiveness in selected colliery has been evaluated using the seismic effect method and seismic source parameters analysis. The results were compared with each other and conditions were observed in situ.
    PracovištěÚstav geoniky
    KontaktLucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354
    Rok sběru2018
    Elektronická adresahttp://www.sciencedirect.com/science/article/pii/S1877705817323810
Počet záznamů: 1  

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