Home > Search Results: Jiránková, E
Search:
 
Search Tips :: Simple Search
Search collections:
Sort by: Display results: Output format:
National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Regular surface measurements in terms of verirification of the room and pillar mining method
 Jiránková, Eva
The mining by room and pillar method was operated in the protective pillar of the Sever Důlního závod 2 site in the period from May 2014 to October 2017. The protective shaft pillar is constructed using a pillar angle that is steeper than the limiting angle of influence. Therefore, the influence of the surrounding mining is partially occurred in the protective pillar. The surface in the area of the protective pillar is thus affected by both the surrounding mining and the mining by room and pillar method in the protective pillar. The purpose of geodetic measurements is to make the data needed to evaluate the surface displacements that occur as a result of the effect of the mining by room and pillar method. Therefore, it is necessary to carry out the sufficient amount of geodetic measuring in order to prove in the future what part of the value of surface subsidence contributes to the effect of mining by room and pillar method during the concurrently influence of the longwall mining in the effective distances from the protective pillar.
Detailed record
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.
Detailed record
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.
Fulltext: content.csg - Download fulltextPDF
Plný tet: UGN_0387787 - Download fulltextPDF
Detailed record

Interested in being notified about new results for this query?
Subscribe to the RSS feed.
Digital Repository :: Search :: Submit :: Personalize :: Help
Powered by Invenio v1.1.2
Maintained by admin.invenio@techlib.cz
This site is also available in the following languages:
Česky  English