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Research of geotechnical methods – Stage research report – Stage C
Staš, Lubomír ; Waclawik, Petr ; Souček, Kamil ; Vavro, Martin ; Kukutsch, Radovan ; Schuchová, Kristýna ; Gong, Libin ; Kubina, Lukáš ; Zajícová, Vendula ; Nohejl, Zdeněk ; Rutar, Tomáš
The main goal of project No. FV20294 (GEOSTAB) was the verification of measured geophysical quantities with data obtained by various geotechnical methods. For this reason, stage C - Research of geotechnical methods was solved in parallel and in close cooperation with stage B - Research of geophysical methods. The geotechnical experiments in situ were carried out in the same localities where geophysical methods were applied. For this purpose, several underground mining workings located in different lithological and geomechanical conditions were selected. Experimental gallery Josef was selected in volcanic rocks, the metamorphic rock mass was represented by underground workings of the former deep uranium mine Rožná and the sedimentary environment was examined in the old slate mine Modrá štola. The stage research report summarizes the results of geotechnical, laboratory and numerical methods from all the mentioned localities.
Analysis EDZ using verified numerical models (FLAC3D)
Staš, Lubomír ; Waclawik, Petr ; Gong, Libin
Based on the obtained geotechnical and laboratory data, the extent and character of Excavation Damage Zone (EDZ) was simulated using static and dynamic models in the commercial software FLAC3D. The commercial program Fast Lagrangian Analysis of Continua in 3 Dimensions (FLAC3D) (Itasca Consulting Group 2012) was adopted to analyse the EDZ of Rozna Mine roadway. The analysed profile is located on the roadway No. Z3-XX in an environment formed mainly by migmatized biotite to amphibole-biotite pararules. The dynamic mode simulate using of blasting method. The research report summarize results of numerical simulation of EDZ in high anisotropic rock mass.
3D laser scanning of underground workings in various conditions
Staš, Lubomír ; Kukutsch, Radovan ; Waclawik, Petr ; Gong, Libin ; Schuchová, Kristýna
3D laser scanning of mining workings were implemented at three locations with different conditions. The roadways in volcanic rocks at a depth ca 50 m below the surface at the Experimental gallery Josef, selected part of the Z3-XX roadway located in a metamorphic rock mass at a depth about 950 m below the surface at the Rožná mine and the closed slate mine Modrá štola in sedimentary rock mass located just below the surface, were scanned and interpreted in detail. 3D scans of mining workings were mainly used as input data to the GENIE software for processing geophysical measurements in the 3D dimension. This software tool was developed by the staff of the Technical University of Liberec and Geotest a.s.
3D geomechanical numerical model of roadways, building of underground research facility (URF) Bukov II. stage
Souček, Kamil ; Gong, Libin ; Waclawik, Petr ; Vavro, Martin
Spin-off plant GEAM of DIAMO, state enterprise, intends the construction of 2nd stage of the underground research facility (URF) Bukov in the area of the Rožná uranium deposit. The aim of this work is to compile the 3D mathematical geomechanical model of projected URF excavations in software for numerical modeling FLAC 3D. The main output of numerical modeling is the analysis of the “strength factor” distribution (SF factor) reflecting the stability of the rock mass after the excavation of laboratory roadways and testing chambers of URF

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1 Gong, Luoxi
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