Estimation of active rockburst prevention effectiveness during longwall mining under disadvantageous geological and mining conditions

0453716 - ÚGN 2016 PL eng C - Konferenční příspěvek (zahraniční konf.)
Wojtecki, L. - Koníček, Petr
Estimation of active rockburst prevention effectiveness during longwall mining under disadvantageous geological and mining conditions.
Górnicze zagrozenia naturalne 2015. Katowice: GIG Katowice, 2015, s. 1-8. Zagrozenie naturalne - bariery rozwoju górnictwa. ISBN N.
[Medzinarodowa Konferencja Naukowo - Techniczna z cyklu Górnicze zagrozenia naturalne 2015 /22./. Targanice (PL), 03.11.2015-06.11.2015]
Grant CEP: GA MŠMT ED2.1.00/03.0082; GA MŠMT(CZ) LO1406
Institucionální podpora: RVO:68145535
Klíčová slova: active rockburst prevention * destress blasting * seismic effect
Kód oboru RIV: DH - Báňský průmysl vč. těžby a zpracování uhlí

Underground longwall mining of coal seams in the Upper Silesian Coal Basin (USCB) is currently being carried out under increasingly difficult geological and mining conditions. Mining depth, dislocations and mining remnants are the main factors responsible for the most significant rockburst hazard, which can be minimized via the use of active and passive rockburst prevention. Active rockburst prevention in longwalls is usually based on blasting in order to either destress local stress concentrations in the rock mass or to fracture the thick layers of strong roof rocks to prevent or minimize the impact of high energy tremors on excavations. The accurate estimation of active rockburst prevention effectiveness is particularly important when mining under disadvantageous geological and mining conditions, which are associated with high level of such hazard.
Trvalý link: http://hdl.handle.net/11104/0254452