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Wyszukujesz frazę "Kukutsch, R." wg kryterium: Wszystkie pola


Wyświetlanie 1-2 z 2
Tytuł:
Possibility of convergence measurement of gates in coal mining using terrestrial 3D laser scanner
Autorzy:
Kukutsch, R.
Kajzar, V.
Konicek, P.
Waclawik, P.
Powiązania:
https://bibliotekanauki.pl/articles/92148.pdf
Data publikacji:
2015
Wydawca:
Główny Instytut Górnictwa
Tematy:
skanowanie 3D
chmury punktów
górnictwo
monitoring geotechniczny
pomiar zbieżności
3D laser scanning
point clouds
mining
geotechnical monitoring
convergence measurement
Opis:
The application of laser scanning technology has increased recently in many different branches. The presented paper deals with an application of this technology in the mining environment. To verify the spatial changes (movements and deformations) of mining works this technology was deployed in situ at the selected mining workplace in the Czech part of the Upper Silesian Coal Basin. The main purpose of 3D laser scanning at Lazy Mine was to monitor the deformation of the roadway before approaching the longwall face on the selected tailgate. From the results of performed 3D scanning used it was possible to accurately define and quantify the floor lift area in front of the approaching coalface, observe measurable tilt of middle wooden props, capture documentable changes in floor dinting during the period between campaigns and monitor the deformation of steel arch support, confirming the influence of additional stress away from the goaf of previous longwall.
Źródło:
Journal of Sustainable Mining; 2015, 14, 1; 30-37
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stress-state monitoring of coal pillars during room and pillar extraction
Autorzy:
Waclawik, P.
Ptacek, J.
Konicek, P.
Kukutsch, R.
Nemcik, J.
Powiązania:
https://bibliotekanauki.pl/articles/92016.pdf
Data publikacji:
2016
Wydawca:
Główny Instytut Górnictwa
Tematy:
stress state
monitoring
room and pillar
coal pillar
stan naprężenia
system komorowo-filarowy
filar węglowy
Opis:
Current mining activities of the OKD mines are primarily focused on coal seams within the Karvina Formation in the Karvina sub-basin. A considerable amount of coal reserves are situated in protection pillars that lie under built-up areas. The longwall mining method is not applicable in these areas because significant deformation of the surface is not permitted. For this reason OKD is considering using alternative methods of mining to minimise subsidence. The room and pillar method has been trialed with specific coal pillars in order to minimise strata convergence. The method was implemented in the shaft protective pillar at the CSM Mine and is the first application of the room and pillar mining method within the Upper Silesian Coal Basin. Mining depth reached up to 900 m and is perhaps the deepest room and pillar panel in the world. To determine pillar stability, vertical stress was measured in two adjacent coal pillars which are diamond in shape and located within a row of pillars forming the panel. Two pillars diamond in shape and slightly irregular sides were approximately 860 m2 and 1200 m2 in size and 3.5 m high To measure the increase in vertical stress due to mining, four stress cells were installed in each coal pillar. Four 5level multipoint rib extensometers measured displacements of all sides within each monitored pillar. The results of stress-state and pillar displacement monitoring allowed pillar loading and yielding characteristics to be described. This data and other analyses are essential to establishing procedures for a safe room and pillar method of mining within the Upper Silesian Coal Basin.
Źródło:
Journal of Sustainable Mining; 2016, 15, 2; 73-83
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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