Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Thomas Frühwirt"'
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-21 (2024)
Abstract To see if and how abrasive potential as well as drilling efficiency change due to rock heating, Cerchar scratch tests were performed on six types of rock at eight temperature levels. Results indicate that rock abrasivity is temperature-depen
Externí odkaz:
https://doaj.org/article/ebef6abbf50644febf0f640a83a5bd66
Publikováno v:
Applied Sciences, Vol 14, Iss 1, p 17 (2023)
Conceptualizing sophisticated measurement set-ups as well as testing and evaluation procedures for laboratory experiments on anisotropic rocks requires a basic understanding of the potential specimen behavior. The focus of the present work was theref
Externí odkaz:
https://doaj.org/article/6f9a9b63458e40c3a2d758f4ed81ea29
Autor:
Tina Marolt Čebašek, Thomas Frühwirt
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 10, Iss 1, Pp 151-163 (2018)
The aim of this study is to identify the influence of the dip angle of a pre-existing macrocrack on the lifetime and ultimate deformation of rock-like material. Prediction of lifetime has been studied for three groups of specimens under axial static
Externí odkaz:
https://doaj.org/article/e51f8f05635d41e699be0a332e182640
Publikováno v:
Materials; Volume 15; Issue 23; Pages: 8567
Coalbed methane (CBM) exploitation leads to permanent stress redistributions in the coal bodies connected with fracturing processes and permeability changes due to deformation induced internal pore-fracture networks. Gas permeability evolution of coa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1e9b122ece9f37fce7fd9c86e17056f
https://pubmed.ncbi.nlm.nih.gov/36500062
https://pubmed.ncbi.nlm.nih.gov/36500062
Autor:
Fei Wang, Monika Kutz, Thomas Frühwirt, Nadine Freudenberg, Heiner Siedel, Martin Herbst, Heinz Konietzky
Publikováno v:
Rock Mechanics and Rock Engineering. 54:3149-3164
In this study, numerical simulations of the behaviour of large-size sandstone specimens exposed to wood crib fires were conducted. The developed numerical model, which innovatively considers the reversible quartz expansion behaviour during heating–
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::79e80c860ab65b399d55543d38aa4449
https://doi.org/10.1007/s00603-021-02454-7
https://doi.org/10.1007/s00603-021-02454-7
Autor:
Keita Yoshioka, Gesa Ziefle, Thomas Frühwirt, Patrick Schmidt, Thomas Fischer, Thomas Nagel, Olaf Kolditz, Karsten Rink, Jobst Maßmann, Heinz Konietzky, Daniel Pötschke, Mathias Nest, Holger Steeb, A. S. Sattari, Frank Wuttke, Uwe-Jens Görke, Carolin Helbig, Bernhard Vowinckel
Publikováno v:
Environmental Earth Sciences. 80
The present paper gives an overview of the GeomInt project “Geomechanical integrity of host and barrier rocks—experiment, modelling and analysis of discontinuities” which has been conducted from 2017–2020 within the framework of the “Geo:N
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c1a9d1380beea725924960ed8dae50f
https://doi.org/10.1007/s12665-021-09787-0
https://doi.org/10.1007/s12665-021-09787-0
Publikováno v:
Rock Mechanics and Rock Engineering. 53:1935-1952
Thermal induced cracks and the tensile strength variation of Eibenstock granite subjected to high-speed heating have been studied through lab testing. The Digital Image Correlation (DIC) technique was used for analysing the tensile behaviour of grani
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4521c2ac5f9fd55c3ab58ab03ce8eb5a
https://doi.org/10.1007/s00603-019-02022-0
https://doi.org/10.1007/s00603-019-02022-0
Publikováno v:
Rock Mechanics and Rock Engineering. 53:337-364
An accurate quantification of the frictional behaviour of joints under cyclic normal load conditions during the cyclic shear process is important to characterize the joint and fault interactions during earthquakes and rock bursts. We conducted experi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::329d5bf450c24d7f07dcc1ce39292df0
https://doi.org/10.1007/s00603-019-01910-9
https://doi.org/10.1007/s00603-019-01910-9
Publikováno v:
Environmental Earth Sciences. 80
The aim of this work is to provide a complete data set of direct shear tests and to propose a corresponding simulation approach. Tests have been conducted on crystalline rock samples applying constant normal load (CNL) and constant normal stiffness (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ce7f502d0a25684633163abee15b1a4
https://doi.org/10.1007/s12665-021-09606-6
https://doi.org/10.1007/s12665-021-09606-6
Autor:
Amir Shoarian Sattari, Thomas Frühwirt, Jobst Maßmann, Mathias Nest, Dirk Naumann, Daniel Pötschke, Matthias Ruf, Tilo Kneuker, Bernhard Vowinckel, Markus Furche, Gesa Ziefle
Publikováno v:
GeomInt–Mechanical Integrity of Host Rocks ISBN: 9783030619084
In order to investigate the barrier rocks, such as saltstone, claystone and crystalline, response under the coupled thermo-hydro-mechanical (THM) processes, a series of laboratory and field tests in the scope of the GeomInt project are carried out.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b18e8e74eb9efbbf1e40a4b15d5bb3d7
https://doi.org/10.1007/978-3-030-61909-1_2
https://doi.org/10.1007/978-3-030-61909-1_2
