National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The study of the influence of the single entry and pillar mining method in seam No. 40 in Jan-Karel protective shaft pillar, location CSA Mining Plant 1 on Jan and shaft No. 2 downcast shafts and on the CSA 3 upcast air shaft, surface and surface objects
Ptáček, Jiří ; Kajzar, Vlastimil ; Koníček, Petr ; Kukutsch, Radovan ; Waclawik, Petr ; Jiránková, E.
The presented method single entry room and pillar solves the possibility of applying single entry room and pillar mining method, where roadheaders are used, newly in two variants. According to the first of them will be entries and intra-entries inundated with a time lag with fly ash mixtures. The second variant will be excavated only basic entries with a width of 6.8 meters. They will not be flooded. The purpose of the study is also adding calculations of potential and the expected impact of single entry room and pillar method on the surface and surface objects and also the expected impact on the shafts in Jan-Karel protective shaft pillar.
Configuration of the subsidence through and evaluation of rigid overlaying strata failure in the mining processes of coal seams 38,39 and 40 in the 9th block of Karvina Mine, Lazy Plant
Jiránková, E. ; Mikoláš, M. ; Waclawik, Petr
The paper focuses on the spatio-temporal formation of the subsidence trough in area 9th block of the mining area Karvina Mine, Lazy. The paper is assessment of the failure of overlying strata of the exploited seam. For purposes of this assessment is utilized to record registered significant seismological events.
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1 Jiránková, E.
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