National Repository of Grey Literature 89 records found  beginprevious80 - 89  jump to record: Search took 0.03 seconds. 
Failure character of coal geo-composites grouting resins base
Souček, Kamil ; Staš, Lubomír ; Obara, Y. ; Fukahori, D.
One of the possibilities of improving stability of longwall gates and roadway driven in coal seams in the application of a chemical grouting that will result in formation of a coal geocomposite in the surroudings of the underground roadway. The properties of such a coal geocomposite differ from the ones of the unmodified coal seam. The presented paper deals with laboratory geo-mechanical tests of pure coal and coal geo-composites prepared in laboratory. The paper discusses the different failure of these original and modified coal samples. The X-ray CT scans were used for observation and demonstration of failure evolution in these samples of pure coal and coal geo-composites.
Horizontal stress in Czech part of Upper Silesian Basin
Staš, Lubomír ; Kolcun, Alexej ; Šimkovičová, Jarmila ; Souček, Kamil
The results of measurement by hydrofracturing method in the area of Czech part of USB are discussed. The measurements proved some general direction of the primary stress impact: high anisotrophy of horizontal stress, relatively high ratio of horizontal to vertical stresses ((SH+Sh)/Sv÷2). Horizontal stresses in the zones intensely disturbed by mining activity indicate magnitudes corresponding only to effect of overburden load in elastic model of rock mass. Orientation of horizontal stress either corresponds direction of presumed effect of superposition of Carpathian nappes or copiers direction of vicinity tectonic faults usually near of them.
Geophysical method study of quality measurement of grouting works in surroudings of mine openings
Staš, B. ; Šňupárek, Richard ; Souček, Kamil
Strengthening grouting represents effective method to influencing of deformation and strength properties of rock mass. The monitoring of efficiency should be integral part of grouting process. This contribution deals with possibilities of utilisation of seismic methods (based on elastic wave propagation in physical-elastic rock environment) in monitoring process of efficiency of strengthening grouting in surroudings of mine openings.
Reinforcing grouting in coal seams
Souček, Kamil ; Šňupárek, Richard
Chemical grouting is very effective in coal mining. The paper summarises experience with chemical grouting for stabilisation and reinforcing of underground openings.
Vybrané problémy fúzí podniku
Souček, Kamil ; Dvořáček, Jiří (advisor) ; Socháň, Petr (referee)
Procesní costingový model Vymezení činností pro zahraniční entitu Algoritmus výpočtu outsourcovaných činností

National Repository of Grey Literature : 89 records found   beginprevious80 - 89  jump to record:
See also: similar author names
8 SOUČEK, Karel
1 Souček, K.
8 Souček, Karel
2 Souček, Kryštof
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