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The introductory view on the pressure load in the underground storage in the exploration zone Milasín-Bukov
Koníček, Petr ; Ptáček, Jiří ; Souček, Kamil ; Staš, Lubomír ; Vavro, Martin ; Waclawik, Petr
The report was prepared as the preliminary opinion on the pressure load resistance of the rock mass inside the gas storage Milasín-Bukov. It comprised the data summary and analysis, which were gained by measuring in mine or by laboratory tests. Rock and rock-mass parameters were obtained by deformation and/or stress/strain monitoring in the roadways in the mine using the index RMR or Q characterized the rock quality. The mechanical and stress/strain conditions were tested in labor on selected rock samples. The rock mass resistance to gas pressure inside the gas storage was determined based on the methodology stress strain in-situ measurements in the before driven roadways in the similar rock-mass conditions. The results were compared with the results of mathematical model.
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Cable bolts utilization in thick seam mining
Kukutsch, Radovan ; Šňupárek, Richard ; Waclawik, Petr
On the basis of different field and laboratory studies, a mining method called „cable bolting based thick seam depillaring“ has been developed CSIR-CIMFR to meet the technical challenges arising during underground extraction of a thick coal seam of India. This method is based on two simple principles of rock-mass reinforcement: (a) improvement in strength of the reinforcement with increase in the confinement and (b) dilution in strength of the reinforcement under tensile condition of the host rock mass. This method is being used by a number of Indian coal mines for depillaring of total thickness (up to 7.5 m) of a thick coal seam (developed along the floor horizon) in single lift. This paper presents application of the method at Madhusudanpur 7 Pit and Incline mine.
Fulltext: content.csg -  PDF
Plný tet: UGN_0437503 - PDF
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Methodical instructions for secure stability of mine roadways in great depth
Koníček, Petr ; Šňupárek, Richard ; Konečný, Petr ; Ptáček, Jiří ; Kukutsch, Radovan ; Kajzar, Vlastimil ; Waclawik, Petr ; Souček, Kamil ; Staš, Lubomír ; Hortvík, Karel ; Konečný, Pavel
Methodology provides instructions for safe and economic design of roadways for mining and mining design companies in conditions of the Czech part of the Upper Silesian Coal Basin. Methodology covers area of all used roadway support as a steel arch support, rock bolt and cable bolt support as well as methods of grouting for stability and reinforcement of roadways.
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Modifikace projektu monitoringu napěťodeformačního stavu horninového masivu při dobývání sloje 30 (634) v rámci zkušebního provozu dobývací metody chodba - pilíř v OPJ Dolu ČSM - Sever - Modifikovaný návrh ověření možnosti použití metod protiotřesové prognózy a prevence při použití dobývací metody chodba- pilíř v rámci zkušebního provozu ve sloji 30 (634) v OPJ Dolu ČSM - Sevwer
Waclawik, Petr ; Koníček, Petr ; Ptáček, Jiří ; Šňupárek, Richard ; Kajzar, Vlastimil ; Kukutsch, Radovan ; Vavro, Martin ; Souček, Kamil ; Holečko, J. ; Stoniš, M. ; Suchanek, E. ; Sojka, R. ; Przeczek, A.
Jedná se o projekt monitoringu napěťodeformačního stavu horninového masivu při dobývání sleje č. 30 (364) v rámci zkušebního provozu nové metody chodba - pilíř v ochranném pilíři jam Dolu ČSM, lokalita Sever.
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Project monitoring the stress-strain state of the rock mass during extraction of coal seam 30 (634) within the test run mining methods corridor - a pillar in the OPJ Mine CSM - Sever. Proposal verify the possibility to use anti-shake prognosis and prevention using mining methods corridor - pillar within pilot operation in seam 30 (634) in OPJ Mine CSM - Sever
Waclawik, Petr ; Koníček, Petr ; Ptáček, Jiří ; Šňupárek, Richard ; Kajzar, Vlastimil ; Kukutsch, Radovan ; Vavro, Martin ; Souček, Kamil ; Holečko, J. ; Stoniš, M. ; Suchanek, E. ; Sojka, R. ; Przeczek, A.
On the basis of a contract for No. 850/33/10 and Appendix 1 of this contract , between OKD , as, ČSM and the Institute of Geonics AS CR, v.v.i. we present the following project monitoring stress tension-deformation condition of the rock mass during extraction of coal seam No.30 (634 ) within the test run mining methods corridor - pillar in a protective pillars jam CSM Mine, north location. Monitoring of the stress tension-deformation state of rock mass is a prerequisite for successful verification of a new mining method unapproved hall - pillar and its further use in the Czech part of the Upper Silesian Coal Basin. This mining method is designed on the basis of experiences and practices, which are verified in different natural conditions and depths, and therefore it is necessary for the verification of the conditions of the Czech part of the Upper Silesian Basin on the basis of the proposed geotechnical monitoring. Test operation of the new hall - pillar method will be implemented in the seam No.30 (634 ) in the rock mass included in the category without the risk of shocks.
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