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Determination of in situ stress state at Bukov Bukov URF II - search of the stress state measurement methods and study of their use in the process of construction and operation of a deep geological repository.
Vavro, Martin ; Waclawik, Petr ; Souček, Kamil ; Staš, Lubomír ; Koníček, Petr ; Jiránková, Eva ; Schuchová, Kristýna ; Kukutsch, Radovan ; Kajzar, Vlastimil
The presented search summarizes main measurement methods and their corresponding technical instrumentation, which were used in the past to determine the stress state of the rock\nmass, both in the conditions of Bukov URF I or the Rožná mine respectively, and especially in the environment of selected foreign underground research laboratories. The key results obtained during these stress measurements are also compiled. The findings are then reflected in the proposed method of rock mass stress measurement and monitoring in various stages of the process of preparing and operating a deep geological repository (DGR) in the Czech Republic. From the conducted search of the crucial published studies and the results of in situ experiments, it follows that the most commonly used methods of stress measurement worldwide are mainly hydraulic fracturing of borehole walls (hydrofracturing) and the overcoring method. These two methods were also proposed as the most suitable for the stage of selecting the final site of the DGR in the Czech Republic. In the phase of construction the DGR, it was recommended to extend them by the method of inverse analysis of convergence measurements. For the purposes of measuring stress changes during the construction and operation of the DGR, monitoring using conical tensometric CCBM probes was recommended as the most suitable.
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Geological and geotechnical characterisation of the mining environment - URF Bukov II - Interim report III
Soejono, I. ; Bukovská, Z. ; Rukavičková, L. ; Švagera, O. ; Chabr, T. ; Souček, Kamil ; Vavro, Martin ; Morávek, R. ; Levý, O. ; Sosna, K. ; Kryl, J. ; Řihošek, J. ; Zelinková, T. ; Dobeš, P. ; Hanák, J. ; Čermák, F. ; Kašpar, R. ; Mareček, L. ; Nedvěd, J. ; Vavro, Leona ; Myška, O. ; Janeček, Ivan
This report describes the work carried out in the third year of the public contract Geological and geotechnical characterisation of the rock environment – the Bukov URF II. The characterisation and descriptive works are directly related to the excavation of the premises for the future underground laboratory. These include in particular: geological and geotechnical documentation of the faces and walls of the workings, petrographic, mineralogical and structural geological documentation, hydrogeological characterisation of the environment, as well as determination of the physical and mechanical properties of the rock-mass in situ and in the laboratory, geophysical characterisation and monitoring of the seismic effects of blasting. The report also includes the newly developed rock mass\nclassification system and the results of its testing on the Bukov URF II site. The report includes also brief overview of the work planned for the following year of the project.
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Geological and geotechnical characterisation of the mining environment - URF Bukov II - Interim report II
Bukovská, Z. ; Rukavičková, L. ; Chabr, T. ; Morávek, R. ; Levý, O. ; Sosna, K. ; Souček, Kamil ; Vavro, Martin ; Zelinková, T. ; Dobeš, P. ; Švagera, O. ; Kryl, J. ; Soejono, I. ; Řihošek, J. ; Holeček, J. ; Hanák, J. ; Čermák, F. ; Kašpar, R. ; Mareček, L. ; Nedvěd, J. ; Vavro, Leona ; Waclawik, Petr ; Staš, Lubomír ; Myška, O.
This report describes the work carried out in the second year of the public contract Geological and geotechnical characterisation of the rock environment – PVP Bukov II. The\ncharacterisation and descriptive works are directly related to the excavation of the premises for the future underground laboratory. These include in particular: geological and geotechnical documentation of the faces and walls of the workings, petrographic, mineralogical and structural geological documentation, hydrogeological characterisation of the environment, as well as determination of the physical and mechanical properties of the rock mass in situ and in the laboratory, geophysical characterisation and monitoring of the seismic effects of blasting and hydrogeological monitoring. An important part of this report is preparation of the classification system used to describe the rock mass. The report also includes a brief overview of the work planned for the third year of the project.
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Geological and geotechnical characterisation of the mining environment - URF Bukov II - Interim report I
Bukovská, Z. ; Rukavičková, L. ; Chabr, T. ; Morávek, R. ; Levý, O. ; Sosna, K. ; Souček, Kamil ; Vavro, Martin ; Zelinková, T. ; Dobeš, P. ; Švagera, O. ; Kryl, J. ; Soejono, I. ; Řihošek, J. ; Hanák, J. ; Čermák, F. ; Kašpar, R. ; Mareček, L. ; Nedvěd, J. ; Vavro, Leona ; Myška, O. ; Janeček, Ivan
This report describes the work carried out in the first year of the public contract Geological and geotechnical characterisation of the rock environment – PVP Bukov II. The characterisation and descriptive works are directly related to the excavation of the premises for the future underground laboratory. These include in particular: geological and geotechnical documentation of the faces and walls of the workings, petrographic, mineralogical and structural geological documentation, hydrogeological characterisation of the environment, as well as determination of the physical and mechanical properties of the rock mass in situ and in the laboratory, geophysical characterisation and monitoring of the seismic effects of blasting. An important part of this report is the research of the classification systems used to describe the rock mass and hydrogeological research. The report includes also brief overview of the work planned for the second year of the project.
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