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	Stability control of double used roadways with combined support Šňupárek, Richard ; Konečný, Petr ; Ptáček, Jiří ; Koníček, Petr Double using of roadways in coal mines requires special kinds of support. Combined support consisting from bolting and steel arch supports is described. The paper contains methods of dimensioning and design of combined support in conditions of Ostrava Karviná coal basin. Detailed record
	Verification of the possibility of utilization of rockbolt technology in the Nováky colliery conditions Koníček, Petr ; Souček, Kamil ; Šňupárek, Richard ; Hrabovský, J. Deformation of longwall gates are significant mining complication in conditions of mining of thickness brown coal seams. Difficult mining conditions are coped with standard way – reduced steel arch support spacing, wood polygon supports and timber poles etc. Presented contribution introduces the first step to application bolt technology for strengthening of current longwall gate support. In roadway No. 111 114-05 was installed dozen set of glass fibre reinforce plastic grouted rockbolts K60-25 by polyester resin Lokset in conditions of Nováky Colliery. Afterwards it was carried out pull tests of rockbolts, their assessment and it was defined recommendation for rockbolts using in conditions of Nováky Colliery Detailed record
	Strategy of longwall preparation and of the possibility of support strengthening in the coal mines with the rock burst risk Ptáček, Jiří ; Konečný, Petr ; Šňupárek, Richard ; Koníček, Petr The contribution presents conclusions of the research project called Miners protection against rock burst in the gates and measures to avoid them after checking the rock burst danger, supported by Czech Mining Authority. The results of research on the reinforced break through support and research on the way and strategy of longwalls driving in the conditions of rock burst danger are described. Detailed record
	Evaluation of subsidence caused by application of single-entry room-and-pillar mining method with stable pillars between mined out drifts using the Continuous Miner Technology with full roof bolting. Stage 2 – Development of model for stable pillar dimensioning for single-entry room-and-pillar mining method with Continuous Miner Technology and calculation of surface deformation Konečný, Petr ; Byczanski, Petr ; Koníček, Petr ; Ptáček, Jiří ; Šňupárek, Richard ; Velička, Vilém ; Zeman, Vladislav The model solution of stable pillars dimensioning for single-entry room-and-pillar mining method with Continuous Miner Technology is described. Consequently, the parameters of subsidence trough are calculated as an example caused by application of that technology in selected conditions of Ostrava-Karviná Coal Basin. Detailed record
	Evaluation of subsidence caused by application of single-entry room-and-pillar mining method with stable pillars between mined out drifts using the Continuous Miner Technology with full roof bolting. Stage 1 – Development of mathematical model and calculation of expected surface deformation Konečný, Petr ; Byczanski, Petr ; Koníček, Petr ; Ptáček, Jiří ; Šňupárek, Richard ; Velička, Vilém ; Zeman, Vladislav Evaluation of subsidence caused by application of single-entry room-and-pillar mining method with stable pillars between mined out drifts using the Continuous Miner Technology with full roof bolting. Stage 1 – Development of mathematical model and calculation of expected surface deformation. Detailed record
	Possibilities of double use of longwall drifts at the Paskov, ČSM and Karviná Collieries Konečný, Petr ; Ptáček, Jiří ; Šňupárek, Richard ; Velička, Vilém ; Zeman, Vladislav ; Petroš, V. ; Hudeček, V. ; Šancer, J. ; Dvořáček, J. ; Slivka, V. Analysis of the possibilities of double use of longwall drifts at the Paskov, ČSM and Karviná Colliery with respect to the mining and natural conditions. Conditions for double use longwall drifts, foreign experiences. Detailed record
	Guideline for project planning and support design of longwall drifts intended for double utilization Konečný, Petr ; Koníček, Petr ; Ptáček, Jiří ; Šňupárek, Richard ; Velička, Vilém ; Zeman, Vladislav Guideline with principles for selection, realisation and mine support of longwall drifts which are intended for double utilization focused on combined arch and bolt support. Detailed record
	Probabilistic reliability assessment of anchoring reinforcem,ent in mine excavations and underground workings Janas, P. ; Šňupárek, Richard ; Krejsa, V. ; Krejsa, M. The paper briefly reviews one of the proposed methods of probabilistic reliability assessment of anchoring reinforcement, usable in mine excavations and underground workings. Application of this concept – software „Kotvení“ was especially developed for this purpose using DDFPM (Direct Determined Fully Probabilistic Method). Detailed record
	Present prospects and tendencies in the field of gateroads securing in coal mines Šňupárek, Richard The paper deals with methods of supporting and stabilisation of roadways in coal mines.New investigated and designed methods are connected with double usány of roadways, depth of exploration and environmental requests.Decisive kinds of support include methods of rock mass strenghtening e.g. bolting and grouting. Detailed record
	Ochrana zaměstnanců před důlními otřesy v dlouhých důlních dílech a stanovení opatření při zjištění nebezpečných stavů při vedení a provozu důlních děl s cílem zabránit vzniku otřesu. Projekt č. 44-06. Dílčí zpráva o výsledcích řešení etapy č. 5 Konečný, Petr ; Ptáček, Jiří ; Šňupárek, Richard ; Velička, Vilém ; Zeman, Vladislav ; Bonczek, Č. ; Dvorský, P. ; Holečko, J. ; Koníček, P. ; Przeczek, A. ; Stoniš, M. Řešení projektu se týká ražeb chodeb a úvodních prorážek pro přípravu nových porubních bloků. Snahou je nalézt nové způsoby preventivních opatření, které by v nich omezily na nejmenší možnou míru riziko otřesů. Kromě toho se v projektu řeší problematika zpřesnění lokace seismických jevů a rovněž zkoumá možnost použití vývrtů po trhací práci pro tlakové zavlažování v rámci protiotřesové prevence. Detailed record

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